RU2675829C1 - Banding machine - Google Patents

Abstract

FIELD: valve production.SUBSTANCE: machine for strapping reinforcing bars includes: a first movable clamping element, which is displaced in the direction of contact and separation from one side of the fixed clamping element; second movable clamping element, which is displaced in the direction of contact and separation from the other side of the fixed clamping element; bending station that brings the first movable clamping element and the second movable clamping element into contact with the fixed clamping element and separates from it, moreover, the fixed clamping element includes a shaft that supports rotatably the first movable clamping element and the second movable clamping element, and the bending section includes an opening and closing pin, which pushes the opening and closing guide hole provided in the first movable clamping element, and the opening and closing guide hole provided in the second movable clamping element.EFFECT: machine for strapping reinforcing bars has been created, made with the possibility of reliably performing the operation of clamping the wire using a simple configuration.26 cl, 110 dwg

Description

FIELD OF THE INVENTION

[0001] The present invention relates to a strapping machine for strapping a strapping object, for example, reinforcing bars, wire.

BACKGROUND

[0002] In a related art, a strapping machine is proposed, called a reinforcing bar strapping machine, which wraps a wire around two or more reinforcing rods and twists a wrapped wire to strand two or more reinforcing rods.

[0003] The reinforcing bar strapping machine according to the related art has a configuration in which wires are fed and wound around a reinforcing bar, and then twisted and connected. For such a machine for tying reinforcing bars, a machine for tying reinforcing bars is proposed, in which, after winding the wires around the reinforcing bar, the wires are cut in a state in which they are wrapped around the reinforcing bar, tightly contacting each other, and the wires are tightened on the reinforcing bar by twisting the intersection of one end of the wire and the other end.

[0004] In a reinforcing bar strapping machine in which wires wrapped around a reinforcing bar are tightened around a reinforcing bar when one side of the wire wrapped around the reinforcing bar is sandwiched between the first movable clamping member and the stationary clamping element and the other side of the wire is clamped between the second movable clamping element and the stationary clamping element, the operation of tightening the wire around the reinforcing bar and the operation of twisting the wire.

[0005] In the related art, a configuration is proposed in which the first movable clamping element and the second movable clamping element are opened and closed by parallel movement (for example, see Patent Literature 1). A configuration is also proposed in which the first movable clamping element and the second movable clamping element are opened and closed by a rotation operation with the shaft as the center of rotation (for example, see Patent Literature 2).

List of documents

[0006] Patent Literature 1: Japanese Patent No. 4747455

Patent Literature 2: Publication of Unexamined Japanese Patent Application No. S57-125111

TECHNICAL PROBLEM

[0007] In a configuration in accordance with the related art, in which the first movable clamping element and the second movable clamping element are opened and closed by parallel movement, the movement of the first movable clamping element and the second movable clamping element is guided by elements such as grooves or pins. As the first movable clamping element and the second movable clamping element move in parallel, the size in the transverse direction increases. For this reason, size reduction is difficult. In addition, in a configuration in accordance with the related art, in which the first movable clamping element and the second movable clamping element are opened and closed by a rotation operation with the shaft as a center of rotation, a rotation mechanism of the first movable clamping element and the second movable clamping element is required, and the design is complicated.

[0008] The present invention is made to solve such problems, and its task is to provide a strapping machine, which can be reduced in size and has a simple structure.

SOLUTION

[0009] To solve the above problems, the present invention provides a strapping machine, including: a feed unit that is configured to feed wire and winding wire around the strapping object; and a strapping unit that clamps and twists the wire, wherein the strapping unit includes: a pair of clamping elements in which the other end side is rotatably supported by a shaft extending in the first direction, so that one end side can move towards each other and apart and a moving member that extends in a first direction, and which can move in a second direction orthogonal to the first direction; and at least one of the pair of clamping members is a movable clamping member having a mounting portion, so that the moving member is mounted in the mounting portion, and the mounted moving member can be moved in the second direction.

[0010] In addition, the present invention provides a strapping machine, including: a feed unit that is configured to feed wire and wrap wire around the strapping object; and a strapping unit that clamps and twists the wire, wherein the strapping unit includes: a pair of clamping elements in which the other end side is rotatably supported by a shaft extending in the first direction, so that one end side can move towards each other and apart and a movable element that is movable in a second direction orthogonal to the first direction, at least one of the pair of clamping elements has an opening and closing section of the shaft that extends in the first direction, the movable element has a mounting section into which the opening and closing are installed a shaft portion, and the mounting portion is configured to move the movable member in a second direction in a state in which the opening and closing shaft portion is set flax.

[0011] In the present invention, the other end of the pair of clamping elements is rotatably supported so that one end of the pair of clamping elements can move toward and away from the other end. A pair of clamping elements rotates around the shaft as a center of rotation during an operation in which the mounting portion and the moving member mounted in the mounting portion, or the mounting portion and the opening and closing shaft portion installed in the mounting portion, are relatively moved in a second direction orthogonal to the first direction in which the shaft passes. The wire can be clamped by moving one end of the pair of clamping elements to the other end, and the clamped wire can be released by moving one end of the pair of clamping elements from the other end.

USEFUL EFFECTS OF THE INVENTION

[0012] According to the present invention, it is possible to move one end of the clamping element to and from the other end only by rotating the other end of the pair of clamping elements around the shaft as a center of rotation, and thus, a reduction in size can be achieved. In addition, it is possible to rotate a pair of clamping members only by moving the moving member or the movable member, and thus the structure is simplified.

BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG. 1 is a view of an example of a general configuration of a reinforcing bar strapping machine according to the present embodiment, when viewed from the side.

FIG. 2 is a front view illustrating an example of a general configuration of a reinforcing bar strapping machine according to the present embodiment, when viewed from the front.

FIG. 3 is a view illustrating an example of a feed gear in accordance with the present embodiment.

FIG. 4A is a view illustrating an example of an offset unit in accordance with the present embodiment.

FIG. 4B is a view illustrating an example of an offset unit in accordance with the present embodiment.

FIG. 4C is a view illustrating an example of an offset unit in accordance with the present embodiment.

FIG. 4D is a view illustrating an example of an offset unit in accordance with the present embodiment.

FIG. 5A is a view illustrating an example of a parallel guide according to the present embodiment.

FIG. 5B is a view illustrating an example of a parallel guide according to the present embodiment.

FIG. 5C is a view illustrating an example of a parallel guide according to the present embodiment.

FIG. 5D is a view illustrating an example of parallel wires.

FIG. 5E is a view illustrating an example of intersecting twisted wires.

FIG. 6 is a view illustrating an example of a guide groove in accordance with the present embodiment.

FIG. 7 is a view illustrating an example of a second guide block in accordance with the present embodiment.

FIG. 8A is a view illustrating an example of a second guide block in accordance with the present embodiment.

FIG. 8B is a view illustrating an example of a second guide block in accordance with the present embodiment.

FIG. 9A is a view illustrating an example of a second guide block in accordance with the present embodiment.

FIG. 9B is a view illustrating an example of a second guide block in accordance with the present embodiment.

FIG. 10 is a view of a clamping portion in accordance with the present embodiment.

FIG. 11 is a view of a clamping portion in accordance with the present embodiment.

FIG. 12 is a view of a clamping portion in accordance with the present embodiment.

FIG. 13A is a view of a clamping portion in accordance with the present embodiment.

FIG. 13B is a view of a clamping portion in accordance with the present embodiment.

FIG. 14 is a view of a clamping portion in accordance with the present embodiment.

FIG. 15A is a view illustrating the main parts of the clamping portion according to the present embodiment.

FIG. 15B is a view illustrating the main parts of the clamping portion in accordance with the present embodiment.

FIG. 16 is an external view illustrating an example of a reinforcing bar strapping machine according to the present embodiment.

FIG. 17 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 18 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 19 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 20 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 21 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 22 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 23 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 24 is an explanatory view for explaining the operation of the reinforcing bar strapping machine according to the present embodiment.

FIG. 25A is an explanatory view of a wire winding operation around a reinforcing bar.

FIG. 25B is an explanatory view of a wire winding operation around a reinforcing bar.

FIG. 25C is an explanatory view of a wire winding operation around a reinforcing bar.

FIG. 26A is an explanatory view of a wire looping operation by a folding guide block.

FIG. 26B is an explanatory view of a wire looping operation by a folding guide block.

FIG. 27A is an explanatory view of a wire bending operation.

FIG. 27B is an explanatory view of a wire bending operation.

FIG. 27C is an explanatory view of a wire bending operation.

FIG. 28A is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 28B is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 28C is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 28D is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 29A is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 29B is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 29C is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 30A is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 30B is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 30C is an explanatory view illustrating in detail an example of a clamping and twisting operation of a wire.

FIG. 31A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 31B is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 31C is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 31D is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 32A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 32B is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 33A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 33B is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 34A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 34B is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 35A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 35B is an example of the operation and problems of a reinforcing bar strapping machine in accordance with the related art.

FIG. 36A is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 36B is an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment.

FIG. 37A is a view illustrating a modified example of a parallel guide according to the present embodiment.

FIG. 37B is a view illustrating a modified example of a parallel guide in accordance with the present embodiment.

FIG. 37C is a view illustrating a modified example of a parallel guide according to the present embodiment.

FIG. 37D is a view illustrating a modified example of a parallel guide in accordance with the present embodiment.

FIG. 37E is a view illustrating a modified example of a parallel guide according to the present embodiment.

FIG. 38 is a view illustrating a modified example of a guide groove in accordance with the present embodiment.

FIG. 39A is a view illustrating a modified example of a wire feed unit according to the present embodiment.

FIG. 39B is a view illustrating a modified example of a wire feed unit according to the present embodiment.

FIG. 40A is an explanatory view illustrating a modified example of the present embodiment.

FIG. 40B is an explanatory view illustrating a modified example of the present embodiment.

FIG. 40C is an explanatory view illustrating a modified example of the present embodiment.

FIG. 41A is a view illustrating a modified example of a second guide block according to the present embodiment.

FIG. 41B is a view illustrating a modified example of a second guide block in accordance with the present embodiment.

FIG. 42 is a view illustrating an example of a parallel guide in accordance with another embodiment.

FIG. 43A is a configuration view illustrating an example of a parallel guide according to another embodiment.

FIG. 43B is a view illustrating an example of a parallel guide in accordance with another embodiment.

FIG. 44 is a view illustrating an example of a parallel guide in accordance with another embodiment.

FIG. 45 is an explanatory view illustrating an example of a parallel guide in accordance with another embodiment.

FIG. 46 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 47 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 48 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 49 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 50 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 51 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 52 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 53 is a view illustrating a modified example of a parallel guide in accordance with another embodiment.

FIG. 54 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 55 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 56 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 57 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 58 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 59 is an explanatory view illustrating a configuration and operation of a clamping portion in accordance with another embodiment.

FIG. 60 is a view illustrating an example of a second guide block in accordance with another embodiment.

FIG. 61 is a view illustrating an example of a second guide block in accordance with another embodiment.

FIG. 62 is a view illustrating an example of a second guide block in accordance with another embodiment.

FIG. 63 is an explanatory view illustrating an example of the operation of the second guide block in accordance with another embodiment.

FIG. 64 is an explanatory view illustrating an example of the operation of the second guide block in accordance with another embodiment.

FIG. 65 is a view illustrating an example of an offset portion in accordance with another embodiment.

FIG. 66 is a view illustrating an example of an offset portion in accordance with another embodiment.

FIG. 67 is a view illustrating an example of an offset portion in accordance with another embodiment.

FIG. 68 is an external view illustrating an example of a reinforcing bar strapping machine according to another embodiment.

FIG. 69 is an explanatory view illustrating an example of the operation of an offset portion in accordance with another embodiment.

FIG. 70 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 71 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 72 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 73 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 74 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 75 is an explanatory view illustrating an example of an operation of an offset portion in accordance with another embodiment.

FIG. 76 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 77 is an explanatory view illustrating an example of an operation of an offset portion in accordance with another embodiment.

FIG. 78 is an explanatory view illustrating an example of the operation of an offset portion in accordance with another embodiment.

FIG. 79 is an explanatory view illustrating an example of the operation of an offset portion in accordance with another embodiment.

FIG. 80 is an explanatory view illustrating an example of the operation of the displacement portion in accordance with another embodiment.

FIG. 81 is an external view illustrating an example of a reinforcing bar strapping machine according to another embodiment.

FIG. 82 is a side elevational view of a strapping machine in accordance with another embodiment, a portion of which is removed.

FIG. 83 is a front view of the strapping machine of FIG. 82 (view from the left side of Fig. 1).

FIG. 84 is an internal structural view of the strapping machine of FIG. 82.

FIG. 85 is a front view illustrating the periphery of the wire feed unit of FIG. 84 (sectional view taken along line AA in FIG. 84).

FIG. 86 is a sectional view illustrating the feed gear of FIG. 85, seen from above (sectional view taken along line B-B in FIG. 85).

FIG. 87 is a side view illustrating the twisting unit and its periphery in FIG. 84.

FIG. 88 is a sectional view illustrating a twisted portion of FIG. 87, viewed from above (sectional view taken along line C-C in FIG. 87).

FIG. 89 is a sectional view illustrating a twisted portion in FIG. 87 when viewed from above (view in section taken along the line D-D in Fig. 87).

FIG. 90 is a longitudinal sectional view of a portion of the coil of FIG. 82, seen from the front, with a local section in the vertical direction in the central position.

FIG. 91 illustrates a restrictive portion (protrusion) (provided on the lid) and a front view illustrating a portion of the enclosing block in a local section (or a partially enlarged view of the bottom in FIG. 2).

FIG. 92 illustrates a restrictive portion (protrusion) provided on a cover and a front view illustrating a portion of a containing block in a local section.

FIG. 93A illustrates an inclined portion and a front view illustrating a portion of a containing block in a local section.

FIG. 93B illustrates an inclined portion and a perspective view illustrating an enclosing unit when viewed from below.

FIG. 93C illustrates an inclined portion and a perspective view illustrating an enclosing unit when viewed from above.

FIG. 94A is a view illustrating a pressure mechanism.

FIG. 94B is an exploded perspective view illustrating the construction of a locking device.

FIG. 94C is a partially enlarged perspective view of FIG. 84.

FIG. 94D is a partially enlarged perspective view of FIG. 84, when viewed from the opposite side.

FIG. 94E is an enlarged view of a guide portion of a locking lever including a stop position limiting portion.

FIG. 94F is an enlarged view of a guide portion of a locking arm not including a stop position limiting portion.

FIG. 95 illustrates a wire feed process and a front view illustrating a portion of an enclosing unit in a local section.

FIG. 96 illustrates a wire return process and a side view of a twisted portion or the like, similar to FIG. 87.

FIG. 97 illustrates a wire cutting process and a side view of a twisted portion or the like, similar to FIG. 87.

FIG. 98 illustrates a process for twisting a wire and a side view of a twisted portion or the like, similar to FIG. 87.

FIG. 99 illustrates a wire release process and a side view of a twisted portion or the like, similar to FIG. 87.

FIG. 100 illustrates a first example of a malfunction and a partial sectional view of a part of the enclosing unit.

FIG. 101 illustrates a second example of a malfunction and a partial sectional view of a part of the enclosing unit.

FIG. 102 illustrates a third example of a malfunction and a partial cutaway view of a portion of a containing block.

FIG. 103 illustrates a third example of a malfunction and a partial cutaway view of a portion of the enclosing unit.

FIG. 104 is a view illustrating an example of a strapping unit described in Supplementary Note 1.

FIG. 105 is a view illustrating an example of a strapping unit including a mounting portion described in Supplementary Note 5.

FIG. 106 is a view illustrating an example of a strapping unit including a mounting portion described in Supplementary Note 4.

FIG. 107 is a view illustrating an example of a strapping unit described in Supplementary Note 11.

FIG. 108 is a view illustrating an example of a strapping unit described in Supplementary Note 11.

FIG. 109 is a view illustrating an example of a strapping unit described in Supplementary Note 12.

FIG. 110 is a configuration view illustrating an example of a strapping unit described in Supplementary Note 11.

DETAILED DESCRIPTION OF THE INVENTION

[0014] An example of a machine for tying reinforcing bars as an embodiment of a strapping machine in accordance with the present invention will now be described with reference to the drawings.

An example of a configuration of a machine for tying reinforcing bars in accordance with an embodiment

[0015] FIG. 1 is a view of an example of a general configuration of a reinforcing bar strapping machine according to the present embodiment, seen from the side, and FIG. 2 is a view illustrating an example of a general configuration of a reinforcing bar strapping machine according to the present embodiment, when viewed from the front. Here FIG. 2 schematically illustrates an internal configuration along line AA in FIG. one.

[0016] The reinforcing bar strapping machine 1A according to the present embodiment ties the reinforcing bar S, which is the strand to be strapped, using two or more wires W having a smaller diameter as compared to a conventional large diameter wire. In the reinforcing bar strapping machine 1A, as will be described later, during the operation of winding the wire W around the reinforcing bar S, the tightly tightening operation of the wire W wrapped around the reinforcing bar S on the reinforcing bar S, the operation of twisting the wire wrapped around the reinforcing bar S , the reinforcing bar S is tied with wire W. In the machine 1A for tying reinforcing bars, since the wire W is bent in any of the above operations, when using a wire W having a smaller diameter than traditional I wires, wire wound around the reinforcing bar S with less effort and possible twisting of the wire W with less effort. In addition, when using two or more wires, it is possible to ensure the strength of the strapping of the reinforcing bar S by the wire W. In addition, when placing two or more wires W for parallel feeding, the time required for winding the wire W can be reduced in comparison with the operation of winding the reinforcing bar two or more times with a single wire. It should also be noted that wrapping the wire W around the reinforcing bar S and tightly tightening the wire W wrapped around the reinforcing bar S on the reinforcing bar S is generally called the winding of the wire W. The wire W can be wrapped around a binding object other than the reinforcing bar S Here, a single-core wire or a twisted wire made of metal that can be plastically deformed is used as wire W.

[0017] The reinforcing bar strapping machine 1A includes a magazine 2A, which is a holding unit that holds the wire W, a wire feeding unit 3A that feeds the wire W located in the magazine 2A, a parallel guide 4A for parallel placement of the wires W, fed to the wire feed unit 3A, and wires W supplied from the wire feed unit 3A. The reinforcing bar strapping machine 1A further includes a bending guide unit 5A, which parallel wraps the feed wires W around the reinforcing bar S, and a cutting unit 6A, which cuts the wire W wrapped around the reinforcing bar S. In addition, the reinforcing strapping machine 1A of the rods includes a strapping unit 7A that clamps and twists the wire W wrapped around the reinforcing bar S.

[0018] The shop 2A is an example of an enclosing unit. In an embodiment, a coil 20 on which two long wires W are wound so as to be drawn is removably housed in a magazine. The coil 20 is provided with a tubular hub section 20a onto which wires W can be wound and a pair of flanges 20b that are provided on the opposite end sides of the hub section 20a in the axial direction. The flanges 20b have a larger diameter than the hub section 20a, and protrude beyond the opposite end sides of the hub section 20a in the axial direction. Two or more wires W, in this example two wires W, are wound around the hub portion 20a. In the reinforcing bar strapping machine 1A during rotation of the coil 20 located in the magazine 2A, two wires W are fed from the coil 20 during the operation of feeding two wires W by the wire feeding unit 3A and the operation of feeding two wires W manually. At the same time, two wires W are wound around the hub portion 20a so that the two wires W are fed without twisting.

[0019] The wire feed unit 3A is an example of a wire feed unit forming a feed unit, and includes a first feed gear 30L and a second feed gear 30R as a pair of feed members for feeding parallel wires W, the first feed gear 30L having a spur shape a gear that feeds the wire W during the rotation operation, and the second feed gear 30R also has the shape of a spur gear that grips the wire W between it and the first feed gear 30L. Although the details of the first feed gear 30L and the second feed gear 30R will be described later, the first feed gear 30L and the second feed gear 30R are in the form of a spur gear in which teeth are formed on the outer peripheral surfaces of the disk-shaped member. The first feed gear 30L and the second feed gear 30R are engaged with each other, and the driving force is transmitted from one feed gear to the other feed gear, so that the two wires W can be fed accordingly and the shape is not necessarily limited to the shape of the spur gear. In this case, it is possible to use other designs, so that the described design is not limited to the use of a spur gear.

[0020] Each of the first feed gear 30L and the second feed gear 30R is in the form of a disc-shaped member. In the wire feed unit 3A, the first feed gear 30L and the second feed gear 30R are provided so as to define a wire feed path W between them, so that the outer peripheral surfaces of the first feed gear 30L and the second feed gear 30R face each other. The first feed gear 30L and the second feed gear 30R grip the parallel wires W between portions opposite the outer peripheral surface. The first feed gear 30L and the second feed gear 30R feed two wires W along the direction of travel of the wire W in a state in which the two wires W are parallel to each other.

[0021] FIG. 3 is an assembly or operational view illustrating an example of a feed gear in accordance with the present embodiment. Here FIG. 4 is a sectional view taken along line B-B in FIG. 2. The first feed gear 30L includes a tooth portion 31L on its outer peripheral surface. The second feed gear 30R includes a tooth portion 31R on its outer peripheral surface.

[0022] The first feed gear 30L and the second feed gear 30R are parallel to each other so that the tooth portions 31L and 31R face each other. In other words, the first feed gear 30L and the second feed gear 30R are parallel in the direction along the axial direction Ru1 of the loop Ru formed by the wire W wrapped by the bending guide unit 5A, i.e. along the axial direction of the imaginary circle, where the contour Ru formed by the wire W is considered like a circle. In the following description, the axial direction Ru1 of the loop Ru formed by the wire W wrapped by the bending guide unit 5A is also called the axial direction Ru1 of the loop of the wire W.

[0023] The first feed gear 30L includes a first feed groove 32L on its outer peripheral surface. The second feed gear 30R includes a second feed groove 32R on its outer peripheral surface. The first feed gear 30L and the second feed gear 30R are arranged so that the first feed groove 32L and the second feed groove 32R face each other.

[0024] The first feed groove 32L is formed in the shape of a V-groove on the outer peripheral surface of the first feed gear 30L along the rotation direction of the first feed gear 30L. The first feed groove 32L has a first inclined surface 32La and a second inclined surface 32Lb forming a V-shaped groove. The first supply groove 32L has a V-shaped cross section, so that the first inclined surface 32La and the second inclined surface 32Lb face each other at a predetermined angle. When the wires W are placed in parallel between the first feed gear 30L and the second feed gear 30R, the first feed groove 32L is made so that one wire among the outermost wires of the W wires arranged in parallel, in this example, a part of the outer peripheral surface of one wire W1 of two wires W, located in parallel, is in contact with the first inclined surface 32La and the second inclined surface 32Lb.

[0025] The second feed groove 32R is formed in the shape of a V-groove on the outer peripheral surface of the second feed gear 30R along the rotation direction of the second feed gear 30R. The second feed groove 32R has a first inclined surface 32Ra and a second inclined surface 32Rb, which form a V-shaped groove. Like the first feed groove 32L, the second feed groove 32R is V-shaped in cross section, and the first inclined surface 32Ra and the second inclined surface 32Rb face each other at a predetermined angle. When the wire W is arranged in parallel between the first feed gear 30L and the second feed gear 30R, the second feed groove 32R is formed so that the other wire among the end wires of the wires W arranged in parallel, in this example, a part of the outer peripheral surface of another wire W2 of two wires W, located in parallel, is in contact with the first inclined surface 32Ra and the second inclined surface 32Rb.

[0026] When the wire W is clamped between the first feed gear 30L and the second feed gear 30R, the first feed groove 32L has such a depth and angle (between the first inclined surface 32La and the second inclined surface 32Lb) that the part from the side facing the second feed gear 30R, of one wire W1 in contact with the first inclined surface 32La and the second inclined surface 32Lb, protrudes relative to the lower tooth circumference 31La of the first feed gear 30L.

[0027] When the wire W is clamped between the first feed gear 30L and the second feed gear 30R, the second feed groove 32R has such a depth and angle (between the first inclined surface 32Ra and the second inclined surface 32Rb) that the part from the side facing the first feed gear 30L, another wire W2 in contact with the first inclined surface 32Ra and the second inclined surface 32Rb, protrudes relative to the lower circumference 31Ra of the tooth of the second feed gear 30R.

[0028] As a result, two wires W sandwiched between the first feed gear 30L and the second feed gear 30R are arranged so that one wire W1 is pressed against the first inclined surface 32La and the second inclined surface 32Lb of the first feed groove 32L, and the other wire W2 is pressed against the first inclined surface 32Ra and the second inclined surface 32Rb of the second feed groove 32R. Thus, one wire W1 and the other wire W2 are pressed against each other. In this regard, by rotating the first feed gear 30L and the second feed gear 30R, two wires W (one wire W1 and the other wire W2) are simultaneously fed between the first feed gear 30L and the second feed gear 30R, being in contact with each other. In this example, the first feed groove 32L and the second feed groove 32R are V-shaped in cross section, but are not limited to the V-shaped groove and may, for example, have a trapezoidal shape or an arcuate shape. In addition, for transmitting rotation of the first feed gear 30L to the second feed gear 30R between the first feed gear 30L and the second feed gear 30R, a transmission mechanism including an even number of gears or the like can be provided for rotating the first feed gear 30L and the second feed gear 30R in opposite directions relative to each other.

[0029] The wire feed unit 3A includes a drive unit 33 for driving the first feed gear 30L and an offset unit 34 for pressing and separating the second feed gear 30R relative to the first feed gear 30L.

[0030] The drive unit 33 includes a feed motor 33a for driving the first feed gear 30L and a gear 33b including a combination of gears and the like to transmit the driving force of the feed motor 33a to the first feed gear 30L.

[0031] In the case of the first feed gear 30L, the rotation operation of the feed motor 33a is transmitted by the transmission mechanism 33b, and the first feed gear 30L is rotated. In the case of the second feed gear 30R, the rotation operation of the first feed gear 30L is transmitted to the tooth portion 31R through the tooth portion 31L, and the second feed gear 30R rotates in accordance with the first feed gear 30L.

[0032] As a result, by rotating the first feed gear 30L and the second feed gear 30R due to the frictional force generated between the first feed gear 30L and one wire W1, the friction force generated between the second feed gear 30R and the other wire W2, and the friction force, created between one wire W1 and the other wire W2, two wires W are fed in a state in which they are parallel to each other.

[0033] By switching the forward and reverse directions of rotation of the feed motor 33a, the wire feed unit 3A switches the rotation direction of the first feed gear 30L and the rotation direction of the second feed gear 30R, and the forward and reverse feed directions of the wire W.

[0034] In the strapping machine 1A by directly rotating the first feed gear 30L and the second feed gear 30R in the wire feed unit 3A, the wire W is fed in the forward direction indicated by arrow X1, that is, in the direction of the folding guide unit 5A, and wound around the reinforcing bar S in the folding guide block 5A. In addition, after wrapping the wire W around the reinforcing bar S, the first feed gear 30L and the second feed gear 30R rotate in the opposite direction, as a result of which the wire W is fed back in the direction indicated by arrow X2, i.e. in the direction of the magazine 2A (retracts). The wire W is wrapped around the reinforcing bar S and then drawn back, whereby the wire W is tightly tightened on the reinforcing bar S.

[0035] FIG. 4A, 4B, 4C and 4D are views illustrating an example of an offset unit in accordance with the present embodiment. The bias unit 34 is an example of the bias unit and includes a first bias element 35 that biases the second feed gear 30R in a direction in which the second feed gear 30R comes into tight contact with and is separated from the first feed gear 30L during the rotation operation with the shaft 34a illustrated in FIG. 2, as a center of rotation, and a second biasing member 36 that biases the first biasing member 35. The second feeding gear 30R is pushed in the direction of the first feeding gear 30L by a spring 37 biasing the second biasing member 36 that is biased during the rotation operation with the shaft 36a in as the center of rotation. Thus, in this example, two wires W are held between the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R. In addition, the tooth portion 31L of the first feed gear 30L and the tooth portion 31R of the second feed gear 30R are engaged with each other. Here, by interconnecting the first biasing member 35 and the second biasing member 36 by displacing the second biasing member 36 to bring the first biasing member 35 into a free state, the second feeding gear 30R can be separated from the first feeding gear 30L. However, the first biasing element 35 and the second biasing element 36 may remain connected to each other.

[0036] The bias unit 34 includes an operation button 38 for pushing the second biasing element 36 and a release lever 39 for locking and unlocking the operation button 38. The operation button 38 is an example of the operation element, protrudes outward from the main body 10A and is supported so that be able to move in the directions indicated by arrows T1 and T2.

[0037] The operation button 38 has a first locking recess 38a and a second locking recess 38b. The release lever 39 is fixed in the first locking recess 38a in the wire feed position, in which the wire W can be supplied by the first feed gear 30L and the second feed gear 30R. The release lever 39 is fixed in the second locking recess 38b in the wire loading position, in which the wire W can be loaded by separating the first feed gear 30L and the second feed gear 30R.

[0038] The release lever 39 is an example of a release element and is supported so as to be able to move in the directions indicated by arrows U1 and U2 crossing the direction of movement of the operation button 38. The release lever 39 includes a locking protrusion 39a that is locked in the first locking recess 38a and the second locking recess 38b of the operation button 38.

[0039] The release lever 39 is biased by the spring 39b in the direction of the arrow U1, approaching the operating button 38, and is fixed so that the locking protrusion 39a enters the first locking recess 38a of the operating button 38 in the wire feed position shown in FIG. 4A, or the locking protrusion 39a enters the second locking recess 38b of the operating button 38 in the wire loading position shown in FIG. 4B.

[0040] On the locking protrusion 39a, a guide inclined surface 39c is formed along the direction of movement of the operation button 38. In the release lever 39, the guide inclined surface 39c is pushed during an operation in which the operation button 38 in the wire feed position is pushed in the direction of arrow T2, and the locking protrusion 39a is released from the first locking recess 38a, whereby the release lever 39 is displaced in the direction of arrow U2.

[0041] The bias unit 34 includes a second bias element 36 in a direction substantially orthogonal to the wire feed direction W supplied by the first feed gear 30L and the second feed gear 30R in the wire feed unit 3A, behind the first feed gear 30L and the second feed gear 30R that is, from the side of the handle 11A with respect to the wire feed unit 3A in the main body 10A. An operation button 38 and a release lever 39 are also provided behind the first feed gear 30L and the second feed gear 30R, i.e., from the side of the handle 11A relative to the wire feed unit 3A in the main body 10A.

[0042] The offset unit

As illustrated in FIG. 4A, when the operation button 38 is in the wire feed position, the locking protrusion 39a of the release lever 39 is locked in the first locking recess 38a of the operation button 38, and the operation button 38 is held in the wire feeding position.

[0043] As illustrated in FIG. 4A, in the biasing unit 34, when the operating button 38 is in the wire feed position, the second biasing element 36 is pushed by the spring 37, and the second biasing element 36 is rotated around the shaft 36a as a center of rotation and is shifted in the direction of pressing the second feed gear 30R to the first feed gear 30L .

[0044] As illustrated in FIG. 4B, in the displacement unit 34, when the operation button 38 is in the wire loading position, the locking protrusion 39a of the release lever 39 is fixed in the second locking recess 38b of the operation button 38, and the operation button 38 is held in the wire loading position.

[0045] As illustrated in FIG. 4B, in the biasing unit 34, when the operating button 38 is in the wire loading position, the second biasing member 36 is pushed by the operating button 38, and the second biasing member 36 biases the second feeding gear 30R away from the first feeding gear 30L with the shaft 36a as the center of rotation.

[0046] FIG. 5A, 5B, and 5C are views illustrating an example of a parallel guide in accordance with the present embodiment. Here FIG. 5A, 5B and 5C are cross-sectional views taken along line C-C in FIG. 2, and show cross-sectional shapes of a parallel guide 4A provided in the insertion position P1. In addition, a cross-sectional view taken along the line D-D in FIG. 2, illustrating a sectional shape of a parallel guide 4A provided in an intermediate position P2, and a cross-sectional view taken along line E-E in FIG. 2, illustrating a cross-sectional shape of a parallel guide 4A provided in the cutting position P3, show the same shape. In addition, FIG. 5D is a view illustrating an example of parallel wires, and FIG. 5E is a view illustrating an example of twisted wires intersecting each other.

[0047] A parallel guide 4A forms a feed unit and restricts the direction of a plurality of (two or more) wire wires W. Two or more wires W are included therein, and a parallel guide 4A simultaneously feeds two or more wires W. In a parallel guide 4A, two or more the wires are parallel in parallel to the feed direction and offset from each other in a direction orthogonal to the wire feed direction W, with a restriction on the movement of the wires relative to each other, and the guide can also control vlyat relative positions of wires. In particular, preferably two or more wires W are arranged such that the axis direction of one wire offset from the axis of the other wire is parallel to the axial direction Ru1 of the loop-shaped wire W wrapped around the reinforcing bar S by a bending guide block 5A. The parallel guide 4A has a block for restricting the direction of the wire (for example, the hole 4AW, described later), which restricts the directions of two or more wires W and places or holds them in parallel. In this example, the parallel guide 4A has a guide main body 4AG, and the guide main body 4AG is provided with a hole 4AW, which is a wire direction restriction unit for passing (inserting) a plurality of wires W. A hole 4AW passes through the guide main body 4AG along the wire feed direction W .When a plurality of wires W pass through a hole 4AW and after passing through a hole 4AW, their orientation is determined so that the plurality of wires W are parallel (i.e. si plurality of wires W are shifted in the direction (radial direction) orthogonal to the feeding direction of the wire W (the axial direction), and the axis of each of the plurality of wires W are substantially parallel to each other in the feeding direction). In this regard, a plurality of wires W that pass through the parallel guide 4A exit from the parallel guide 4A in the state in which they are arranged in parallel. Thus, the parallel guide 4A limits the direction of alignment of the two wires W in the radial direction so that the two wires W are parallel. In this regard, in the hole 4AW, one direction orthogonal to the wire feed direction W is larger than the other direction, which is orthogonal to the wire feed direction W and orthogonal to one direction. The hole 4AW has a longitudinal direction (in which two or more wires W can be adjacent to each other) located along a direction orthogonal to the feed direction of the wire W, in particular along the axial direction Ru1 of the loop of the wire W formed by the bending guide block 5A. As a result, two or more wires W inserted through the hole 4AW are fed in parallel in a direction orthogonal to the wire feed direction W, that is, in the axial direction of the wire loop W.

[0048] In the following description, when describing the shape of the hole 4AW, the cross-sectional shape in the direction orthogonal to the wire feed direction W will be described. The cross-sectional shape in the direction along the wire feed direction W will be described in each case.

[0049] For example, if the hole 4AW (its cross section) is a circle having a diameter equal to or more than two times the diameter of the wire W, or the length of one side is essentially a square that is two or more times the diameter wire W, two wires W passing through hole 4AW are in a state in which they can move freely in the radial direction.

[0050] If the two wires W passing through the hole 4AW can freely move in the radial direction within the hole 4AW, the direction in which the two wires W are located in the radial direction cannot be limited, as a result of which the two wires W exiting 4AW holes may not be parallel and may twist or interfere with each other.

[0051] In this regard, the hole 4AW is formed so that the length in one direction, that is, the length L1 in the longitudinal direction, is set to several (n) times the diameter r of the wire W in a state in which a plurality of (n) wires W is located along the radial direction, and the length in the other direction, that is, the length L2 in the transverse direction, was set several (n) times larger than the diameter r of one wire W. In the present example, the hole 4AW has a length L1 in the longitudinal direction, slightly larger than twice the diameter r wire lock W, and the length L2 in the transverse direction is slightly greater than the diameter r of one wire W. In the present embodiment, the parallel guide 4A is configured such that the longitudinal direction of the hole 4AW is linear and the transverse direction is arched, but the configuration is not limited to this.

[0052] In the example illustrated in FIG. 5A, a length L2 in the transverse direction of the parallel guide 4A is set to a length slightly greater than the diameter r of one wire W as a preferred length. However, since it is sufficient that the wire W exits the hole 4AW in a parallel state without crossing or twisting, in a configuration in which the longitudinal direction of the parallel guide 4A is oriented along the axial direction Ru1 of the loop of the wire W wrapped around the reinforcing bar S in the bending guide block 5A, length L2 of the parallel guide 4A in the transverse direction, as illustrated in FIG. 5B may range from a length slightly larger than the diameter r of one wire W to a length slightly smaller than the diameter r of two wires W.

[0053] Furthermore, in a configuration in which the longitudinal direction (or larger) of the parallel guide 4A is oriented in a direction orthogonal to the axial direction Ru1 of the loop of the wire W wrapped around the reinforcing bar S, as illustrated in FIG. 5C, the length L2 in the transverse direction (or short size) of the parallel guide 4A may be within a range from a length slightly larger than the diameter r of one wire W to a length slightly smaller than the diameter r of two wires W.

[0054] In the parallel guide 4A, the longitudinal direction of the hole 4AW is oriented along the direction orthogonal to the wire feed direction W, in this example along the axial direction Ru1 of the wire loop W wrapped around the reinforcing bar S in the bending guide block 5A.

[0055] As a result, the parallel guide 4A can pass two wires in parallel along the axial direction Ru1 of the wire loop W.

[0056] In the parallel guide 4A, when the length L2 in the transverse direction of the hole 4AW is less than the double diameter r of the wire W and slightly larger than the diameter r of the wire W, even if the length L1 in the longitudinal direction of the hole 4AW is two or more times the diameter r of the wire W, W wires can be fed or held in parallel.

[0057] However, the greater the length L2 in the transverse direction (for example, a length close to the double diameter r of the wire W), and the greater the length L1 in the longitudinal direction, the more freely the wire W can move in the hole 4AW and relative to each other. Thus, the respective axes of the two wires W are not held in parallel in the hole 4AW, and there is a high probability of twisting or the influence of the wires W on each other after passing through the hole 4AW.

[0058] In this regard, it is preferable that the longitudinal length L1 of the hole 4AW is slightly more than two times the diameter r of the wire W, and the length L2 in the transverse direction is also slightly greater than the diameter r of the wire W so that the two wires W are parallel in parallel along feed directions. And the relative movement between the wires is limited in the radial direction.

[0059] The parallel guide 4A is provided in a predetermined position from the near side and the far side of the first feed gear 30L and the second feed gear 30R (wire feed unit 3A) with respect to the feed direction for feeding the wire W in the forward direction. By providing a parallel guide 4A on the proximal side of the first feed gear 30L and the second feed gear 30R, the two wires W enter the wire feed unit 3A in a parallel state. In this regard, the wire feed unit 3A can feed the wire W accordingly (in parallel). Further, by providing a parallel guide 4A also on the far side of the first feed gear 30L and the second feed gear 30R, the wire W can be further transmitted from the far side while maintaining the parallel state of the two wires W transmitted from the wire feed unit 3A.

[0060] A parallel guide 4A provided on the proximal side of the first feed gear 30L and the second feed gear 30R is provided in the insertion position P1 between the first feed gear 30L and the second feed gear 30R and the magazine 2A so that the wires W supplied to the feed unit 3A wires were arranged in parallel in a given direction.

[0061] One of the parallel guides 4A provided on the far side of the first feed gear 30L and the second feed gear 30R is provided in an intermediate position P2 between the first feed gear 30L and the second feed gear 30R and the cutting unit 6A so that the wires W fed into cutting unit 6A, were arranged in parallel in a predetermined direction.

[0062] Further, another of the parallel guides 4A provided on the far side of the first feed gear 30L and the second feed gear 30R is provided in a cutting position P3 in which the cutting unit 6A is located, so that the wires W fed into the bend the guide unit 5A were arranged in parallel in a predetermined direction.

[0063] The parallel guide 4A provided in the insertion position P1 has the above-described shape in which at least the far side of the hole 4AW defines a radial direction of the wire W with respect to the forward direction of the wire W for forward transmission. On the other hand, the area of the hole on the side facing the magazine 2A (wire feed unit), which is the proximal side of the hole 4AW with respect to the feed direction of the forward wire W, is larger than the far side. In particular, the hole 4AW has a tubular portion of the hole that restricts the direction of the wire W, and a conical (funnel-shaped, tapering) portion of the hole in which the area of the hole gradually increases from the proximal end of the tubular portion of the hole to the inlet portion of the hole 4AW as the wire feed portion. Due to the fact that the opening area of the wire insertion section is the largest and gradually decreases from it, the wire W can easily enter the parallel guide 4A. In this regard, the work of introducing the wire W into the hole 4AW can be easily performed.

[0064] Another parallel guide 4A also has a similar configuration, and the distal hole 4AW with respect to the forward direction of the wire W transmitted in the forward direction has the above-described shape that limits the direction of the wire W in the radial direction. Furthermore, with respect to another parallel guide 4A, the area of the hole on the proximal side with respect to the feed direction of the wire W transmitted in the forward direction may be larger than the area of the hole on the far side.

[0065] The parallel guide 4A provided in the insertion position P1, the parallel guide 4A provided in the intermediate position P2, and the parallel guide 4A provided in the cut-out delivery position P3 are arranged so that the longitudinal direction of the hole 4AW orthogonal to the wire feed direction W oriented in the direction along the axial direction Ru1 of the loop formed by the wire W wrapped around the reinforcing bar S.

[0066] As a result, as illustrated in FIG. 5D, the two wires W transmitted by the first feed gear 30L and the second feed gear 30R are transmitted while maintaining the state in which they are parallel in the axial direction Ru1 of the loop of the wire W wrapped around the reinforcing bar S, and, as illustrated in FIG. 5E, the intersection and twisting of two wires W during feeding is prevented.

[0067] In the present example, the opening 4AW is a tubular opening having a predetermined depth (a predetermined distance or depth from the inlet to the outlet of the opening 4AW) from the inlet to the outlet of the opening 4AW (in the wire feed direction W), but the shape of the opening 4AW is not limited to this. For example, the hole 4AW may be a flat hole with virtually no depth, which opens the plate main body 4AG of the guide. In addition, the hole 4AW may be a guide in the form of a groove (for example, a U-shaped guide groove with an open upper portion) instead of a portion of the hole passing through the guide main body 4AG. In addition, in the present example, the opening area of the inlet portion of the hole 4AW as the wire insertion portion is larger than another portion, but not necessarily. The shape of the hole 4AW is not limited to a specific shape provided that the plurality of wires passing through the hole 4AW and coming out of the parallel guide 4A are in a parallel state.

[0068] An example has been described up to now in which a parallel guide 4A is provided on the near side (insertion position P1) and in the predetermined position (intermediate position P2 and the dispensing position P3 for cutting) on the far side of the first feed gear 30L and the second feed gear 30R . However, the position in which the parallel guide 4A is mounted is not limited to these three positions. That is, the parallel guide 4A can only be installed in the insertion position P1, only in the intermediate position P2, or only in the dispensing position P3 for cutting, and only in the insertion position P1 and the intermediate position P2, only in the insertion position P1 and the dispensing position P3 for cutting , or only in the intermediate position P2 and the position P3 issuing for cutting. In addition, four or more parallel guides 4A can be provided in any position between the insertion position P1 and the folding guide block 5A on the far side of the cutting position P3. The introduction position P1 also includes the interior of the magazine 2A. That is, the parallel guide 4A may be located near the outlet from which the wire W is drawn from the magazine 2A.

[0069] The folding guide block 5A forms a feed unit and forms a feed path for winding two wires W around the reinforcing bars S in the form of a loop. The bending guide unit 5A includes a first guide unit 50 for bending the wire W transmitted by the first feed gear 30L and the second feed gear 30R, and a second guide unit 51 for guiding the wire W fed from the first guide unit 50 to the strapping unit 7A.

[0070] The first guide block 50 includes guide grooves 52 forming a wire feed path W and guide pins 53 and 53b as a guide member for folding wire W together with guide groove 52. FIG. 6 is a configuration view illustrating an example of a guide groove in accordance with the present embodiment. Here FIG. 6 is a sectional view taken along line G-G in FIG. 2.

[0071] The guide groove 52 forms a guide block and limits the direction of the wire W in the radial direction orthogonal to the wire feed direction W, along with the parallel guide 4A. In this regard, in this example, the guide groove 52 is formed by a long hole in which one direction orthogonal to the wire feed direction W is larger than another direction orthogonal to the wire feed direction W and orthogonal to the one direction.

[0072] The guide groove 52 has a longitudinal length L1, that is, a length in the direction of the width of the groove, which is slightly more than two or more times the diameter r of one wire W in a state in which the wires W are located along the radial direction and the transverse length L2 slightly larger than the diameter r of one wire W. In the present embodiment, the length L1 in the longitudinal direction is slightly more than two times the diameter r of the wire W. In the guide groove 52, the longitudinal direction of the hole is in the longitudinal direction Ru1 axial direction loop wire W. It should be noted that the guide groove 52 does not necessarily have a function to limit the direction of the wire W in the radial direction. In this case, the size (length) of the guide groove 52 in the longitudinal direction and in the transverse direction is not limited to the size described above.

[0073] A guide pin 53 is provided on the side of the wire feed portion W, which is fed by the first feed gear 30L and the second feed gear 30R, in the first guide unit 50 and is located inside the loop Ru formed by the wire W in the radial direction relative to the wire feed path W of the guide groove 52. The guide pin 53 restricts the wire feed path W so that the wire W supplied along the guide groove 52 does not extend radially into the loop Ru formed by the wire W.

[0074] The guide pin 53b is provided on the side of the wire feed portion W supplied by the first feed gear 30L and the second feed gear 30R in the first guide unit 50 and is located on the outside in the radial direction of the loop Ru formed by the wire W, relative to the wire feed path W guide groove 52.

[0075] With respect to the wire W transmitted by the first feed gear 30L and the second feed gear 30R, the radial position of the loop Ru formed by the wire W is limited to at least three points, including two points from the outside in the radial direction of the loop Ru formed by the wire W, and at least one point on the inside between two points, so that the wire W bends.

[0076] In this example, the radially external position of the loop Ru formed by the wire W is limited at two points: parallel to the guide 4A in the issuing position P3 for cutting provided on the near side of the guide pin 53 relative to the forward direction of the wire W transmitted in the forward direction, and a guide pin 53b provided on the far side of the guide pin 53. In addition, the radially internal position of the loop Ru formed by the wire W is limited by the guide pin 53.

[0077] The bending guide unit 5A includes a retraction mechanism 53a allowing the guide pin 53 to be retracted from the path of the wire W during the operation of winding the wire W around the reinforcing bar S. After winding the wire W around the reinforcing bar S, the retraction mechanism 53a is displaced at the same time as strapping unit 7A and retracts the guide pin 53 from the path of movement of the wire W until the wire W is tightened around the reinforcing bar S.

[0078] The second guide block 51 includes a fixed guide block 54 as a third guide block for limiting the radial position of the loop Ru (moving the wire W in the radial direction of the loop Ru) formed by the wire W wrapped around the reinforcing bar S, and the movable guide block 55, serving as the fourth guide block for limiting the position along the axial direction Ru1 of the loop Ru formed by the wire W wrapped around the reinforcing bar S (moving the wire W axially board Ru1 loop Ru).

[0079] FIG. 7, 8A, 8B, 9A and 9B are views illustrating an example of a second guide block; FIG. 7 is a plan view of a second guide block 51, viewed from above, FIG. 8A and 8B are side views of the second guide block 51 when viewed from one side, and FIG. 9A and 9B are side views of the second guide block 51 when viewed from the other side.

[0080] The fixed guide block 54 is provided with a wall surface 54a as a surface extending along the wire feed direction W from the outside in the radial direction of the loop Ru formed by the wire W wrapped around the reinforcing bar S. When wrapping the wire W around the reinforcing bar S, the wall surface 54a of the fixed guide block 54 limits the radial position of the loop Ru formed by the wire W wrapped around the reinforcing bar S. The fixed guide block 54 is attached to the main the housing 10A of the machine 1A for tying reinforcing bars, and its position relative to the first guide block 50 is fixed. The fixed guide block 54 may be integrally formed with the main body 10A. In addition to the configuration in which the fixed guide block 54, which is a separate component, is attached to the main body 10A, the fixed guide block 54 is not perfectly fixed to the main body 10A, but during the looping operation Ru can move to such an extent that the wire moves W may be limited.

[0081] A movable guide block 55 is provided on the far end side of the second guide block 51 and includes a wall surface 55a that is provided on both sides along the axial direction Ru1 of the loop Ru formed by the wire W wrapped around the reinforcing bar S and protrudes inwardly into the radial direction of the loop Ru from the wall surface 54a. When wrapping the wire W around the reinforcing bar S, the movable guide unit 55 limits the position along the axial direction Ru1 of the loop Ru formed by the wire W wrapped around the reinforcing bar S using the wall surface 55a. The wall surface 55a of the movable guide block 55 has a tapering shape in which the distance between the wall surfaces 55a is wide at the end side, on which the wire W transmitted from the first guide block 50 enters, and tapers to the fixed guide block 54b. As a result, the position of the wire W transmitted from the first guide block 50 in the axial direction Ru1 of the loop Ru formed by the wire W wrapped around the reinforcing bar S is limited by the wall surface 55a of the movable guide block 55 and is guided into the stationary guide block 54 by the movable guide block 55.

[0082] The movable guide block 55 is mounted on the stationary guide block 54 by the shaft 55b from the side opposite the end side to which the wire W is transmitted from the first guide block 50. In the movable guide block 55, its distal end side from which it enters the wire W supplied from the first guide block 50 opens and closes in the direction of contact with the first guide block 50 and detaches from it during the rotation of the loop Ru formed by the wire W wrapped around the armature rod S along the axial direction Ru1 with shaft 55b as the center of rotation.

[0083] In a machine for strapping reinforcing bars, when strapping the reinforcing bar S between a pair of guide elements provided for wrapping the wire W around the reinforcing bar S, in this example, a reinforcing bar is inserted (mounted) between the first guide block 50 and the second guide block 51, and then the binding operation is performed. After completing the strapping operation, to perform the next strapping operation, the first guide unit 50 and the second guide unit 51 are retracted from the reinforcing bar S after the strapping is completed. In the case of the removal of the first guide block 50 and the second guide block 51 from the reinforcing bar S when moving the machine 1A for tying the reinforcing bars in the direction of the arrow Z3 (see Fig. 1), which is one direction of separation from the reinforcing bar S, the reinforcing bar S can be removed from the first guide block 50 and the second guide block 51 without any problems. However, for example, when placing reinforcing bars S at a predetermined interval along arrow Y2 and sequentially strapping these reinforcing bars S, it is difficult to move the machine 1A for strapping reinforcing bars in the direction of arrow Z3, and if it can move in the direction of arrow Z2 strapping can be faster. However, in a conventional reinforcing bar strapping machine, disclosed, for example, in Japanese Patent No. 4747456, since the guiding element corresponding to the second guiding element 51 in the present example is fixed to the strapping machine body when trying to move the reinforcing bar strapping machine in the direction of the arrow Z2 the guide element engages in the reinforcing bar S. In this regard, in the machine 1A for strapping the reinforcing bars, the second guide unit 51 (movable guide unit 55) is configured to remescheniya as described above and 1A machine for binding reinforcing bars is moved in the direction of the arrow Z2, so that the reinforcing rod S can be removed from the space between the first guide unit 50 and the second guide unit 51.

[0084] In this regard, the movable guide unit 55 rotates around the shaft 55b as a center of rotation and thus opens and closes between the guide position in which the wire W transmitted from the first guide unit 50 can be guided to the second guide unit 51 and a retraction position in which the reinforcing bar strapping machine 1A moves in the direction of the arrow Z2 and is therefore retracted during the retraction operation of the reinforcing bar strapping machine 1A from the reinforcing bar S.

[0085] The movable guide unit 55 is biased in the direction of decreasing the distance between the end side of the first guide unit 50 and the end side of the second guide unit 51 by the pressure unit (bias unit), for example, the torsion coil spring 57, and is held in the guide position illustrated in FIG. 8A and 9A by the force of the torsion coil spring 57. In addition, when the movable guide block 55 is pushed towards the reinforcing bar S during the retraction operation of the machine 1A for strapping the reinforcing bars from the reinforcing bar S, the movable guide block 55 is opened from the guide position to the retraction position illustrated in FIG. 8B and 9B. The guide position is a position in which the wall surface 55a of the movable guide unit 55 is in the passage position of the wire W forming a loop Ru. The retraction position is a position in which the reinforcing bar S presses on the movable guide unit 55 due to the movement of the reinforcing bar strapping machine 1A, and the reinforcing bar S can be removed from the space between the first guide block 50 and the second guide block 51. Here, the direction of movement of the machine 1A for tying reinforcing bars is not constant, and even if the movable guide unit 55 moves slightly from the guide position, the reinforcing bar S can be removed from the space between the first guide block 50 and the second guide block 51, and therefore, a position slightly offset from the guide position also enters the lead position.

[0086] The reinforcing bar strapping machine 1A includes a guide opening / closing sensor 56 that detects opening and closing of the movable guide unit 55. The guide open / close sensor 56 detects the closed state and open state of the movable guide unit 55 and outputs a predetermined detection signal .

[0087] The cutting unit 6A includes a fixed blade unit 60, a rotating blade unit 61 for cutting wire W when interacting with the fixed blade unit 60, and a transmission mechanism 62 that transfers the operation of the strapping unit 7A, in this example, the operation of the movable member 83 ( described later) moving in a linear direction onto the rotatable blade unit 61 and rotates the rotatable blade unit 61. The stationary blade unit 60 is formed by providing an edge portion adapted to cut the wire oki W, in the hole through which the wire W. passes. In the present example, the fixed blade unit 60 includes a parallel guide 4A located in the dispensing position P3 for cutting.

[0088] The rotating blade unit 61 cuts the wire W passing through the parallel guide 4A of the fixed blade unit 60 during the rotation operation with the shaft 61a as the center of rotation. The transmission mechanism 62 is shifted simultaneously with the work of the strapping unit 7A, and after winding the wire W around the reinforcing bar S, the rotating blade unit 61 rotates in accordance with the moment of twisting of the wire W to cut the wire W.

[0089] FIG. 10, 11, 12, 13A, 13B, and 14 are views of a clamping portion in accordance with an embodiment. FIG. 10 is a plan view of the inside of the clamping portion, viewed from above, FIG. 11 is a side view of the interior of the clamping portion as viewed from the side, and FIG. 12 is a bottom view of the inside of the clamping portion when viewed from below. In addition, FIG. 13A and 13B are top views of a clamping portion as viewed from above, and FIG. 14 is a side view of the interior of the strapping unit.

[0090] The strapping unit 7A is an example of the strapping unit and includes a clamping portion 70 that grips the wire W, and a bending portion 71 configured to bend one end WS and the other end WE of the wire W towards the reinforcing bar S. In this As an example, the bending section 71 is configured to bend one end WS and the other end WE of the wire W, clamped by the clamping section 70, in the direction of the reinforcing bar S.

[0091] The clamping portion 70 forms a strapping unit and includes a fixed clamping member 70C, a first movable clamping member 70L, and a second movable clamping member 70R. The first movable clamping element 70L and the second movable clamping element 70R are located in the transverse direction relative to the stationary clamping element 70C. In particular, the first movable clamping member 70L is located on one side of the fixed clamping member 70C along the axial direction of the wire W wrapped around the wire, and the second movable clamping member 70R is located on the other side.

[0092] The fixed clamping member 70C has a rod shape and includes a shaft 77 that rotatably supports the first movable clamping member 70L and the second movable clamping member 70R. The first movable clamping member 70L and the stationary clamping member 70C are configured such that the wire W extends between the first movable clamping member 70L and one longitudinal end (distal end), which is one side of the stationary clamping member 70C. In addition, the fixed clamping member 70C includes a shaft 77 provided at a longitudinal other end (rear end) which is its other side, and the rear end of the first movable clamping member 70L is rotatably supported by the shaft 77. The second movable clamping member 70R and the stationary the clamping member 70C is configured such that the wire W extends between the second movable clamping member 70R and the distal end, which is one side of the fixed clamping member 70C. The fixed clamping member 70C includes a shaft 77 provided at the rear end, which is its other side, and the rear end of the second movable clamping member 70R is rotatably supported by the shaft 77. The first movable clamping member 70L is configured so that the distal end (one end ) of the other side is displaced in the direction of contact and separation from the stationary clamping member 70C or the second movable clamping member 70R by a rotation operation with the shaft 77 as the center of rotation. In addition, the second movable clamping member 70R is configured such that the distal end (one end) of the other side is biased in the direction of contact and separation from the stationary clamping member 70C or the first movable clamping member 70L by a rotation operation with the shaft 77 as the center of rotation. In this example, the shaft 77 supporting the first movable clamping member 70L is the same shaft 77 that supports the second movable clamping member 70R. The shaft 77 is oriented orthogonal to the direction of movement of the bending section 71, indicated by arrows F and R, and extends in the direction (first direction) of the wire feed W (or return). In this example, the direction indicated by arrow F represents the direction of bending of the end of wire W.

[0093] For example, the bending portion 71 has a cylindrical hollow structure and includes an opening and closing pin 71a that opens and closes the first movable clamping member 70L and the second movable clamping member 70R. In addition, the first movable clamping member 70L includes a first opening and closing guide hole (mounting portion) 77L serving as a first opening and closing guide hole that opens and closes the first movable clamping element 70L in conjunction with the operation of the opening and closing pin 71a . In addition, the second movable clamping member 70R includes a second opening and closing guide hole (mounting portion) 77R serving as a second opening and closing guide hole that opens and closes the second movable clamping element 70R in conjunction with the operation of the opening and closing pin 71a .

[0094] The opening and closing pin 71a is an example of a moving member and extends in a first direction passing through the inside of the bending portion 71. The opening and closing pin 71a is attached to the bending section 71 and moves in accordance with the movement of the bending section 71 bending wire W. The opening and closing pin 71a coaxially extends on the first movable clamping element 70L and the second movable clamping element 70R and linearly moves in the direction (second e direction) orthogonal to the axial direction of the opening and closing pin 71a, which is the direction of passage of the opening and closing pin 71a, together with the bending section 71. The bending section 71 has a shaft 77 on the extended path line of the opening and closing pin 71a due to the movement of the bending section 71.

[0095] The opening and closing guide hole 77L is formed so as to extend in the longitudinal direction of the first movable clamping member 70L. In other words, the opening and closing guide hole 77L extends along the movement direction of the opening and closing pin 71a and converts the linear movement of the opening and closing pin 71a into an opening and closing operation by rotating the first movable clamping member 70L with the shaft 77 as the center of rotation. The opening and closing guide hole 77L is configured to extend along the longitudinal direction of the first movable clamping member 70L, bends outward in the middle and continues along the longitudinal direction again. In particular, the opening and closing guide hole 77L includes a first idle portion 770L that extends along a travel direction of the bending portion 71 a first idle distance from one end, an opening and closing portion 78L that is curved outward from the first idle portion 770L and obliquely extends outward (forward), and the second idle portion 771L, which again extends along the travel direction of the bending portion 71 a second idle distance from the opening and closing part 78L. In a configuration in which the opening and closing portion 78L extends, being obliquely bent outward, from one end of the first idle portion 770L and connected to the second idle portion 771L, the first movable clamping member 70L closes when the opening and closing pin 71a passes through the opening and closing portion 78L.

[0096] The opening and closing guide hole 77R is formed so as to extend in the longitudinal direction of the second movable clamping member 70R. In other words, the opening and closing guide hole 77R extends along the movement direction of the opening and closing pin 71a and converts the linear movement of the opening and closing pin 71a into an opening and closing operation by rotating the second movable clamping member 70R with the shaft 77 as the center of rotation. The opening and closing guide hole 77R is configured to extend along the longitudinal direction of the second movable clamping member 70R, bends outward in the middle and continues along the longitudinal direction again. In particular, the opening and closing guide hole 77R includes a first idle portion 770R that extends along a travel direction of the bending portion 71 a first idle distance from one end, an opening and closing portion 78R that is curved outward from the first idle portion 770R and obliquely extends outward (forward), and the second idle portion 771R, which again extends along the travel direction of the bending portion 71 a second idle distance from the opening and closing part 78R. In a configuration in which the opening and closing portion 78R extends, being obliquely bent outward, from one end of the first idle portion 770R and connected to the second idle portion 771R, the second movable clamping member 70R closes when the opening and closing pin 71a passes through the opening and closing portion 78R.

[0097] The fixed clamping member 70C includes a mounting portion 77C formed by a space in which the first movable clamping member 70L is located on one side and the second movable clamping member 70R is located on the other side. In addition, the fixed clamping member 70C includes a guide hole (mounting portion) 78C that directs the linear movement of the opening and closing pin 71a.

[0098] The bending portion 71 includes a covering portion 71c that vertically covers the stationary clamping member 70C along the direction of passage of the opening and closing pin 71a. As illustrated in FIG. 13A, the bending portion 71 is shaped or configured such that an opening and closing guide hole 77L, an opening and closing guide hole 77R, an opening and closing portion 78L, an opening and closing portion 78R and a guide hole 78C are provided with a covering portion 71c. Therefore, the opening and closing guide hole 77L, the opening and closing guide hole 77R, the opening and closing portion 78L, the opening and closing portion 78R, and the guide hole 78C are not open.

[0099] In the clamping portion 70, the first movable clamping member 70L is inserted into the mounting portion 77C on one side of the fixed clamping member 70C, and the second movable clamping member 70R is inserted into the mounting portion 77C on the other side of the fixed clamping member 70C.

[0100] The first movable clamping member 70L and the second movable clamping member 70R vertically overlap each other in the mounting portion 77C in a mutually sliding state with respect to the mounting portion 77C, and, as illustrated in FIG. 14, the opening and closing guide hole 77L and the opening and closing guide hole 77R overlap each other.

[0101] The first movable clamping member 70L inserted into the mounting portion 77C of the fixed clamping member 70C is rotatably supported on the fixed clamping member 70C by the shaft 77. The second movable clamping member 70R is rotatably supported on the stationary clamping member 70C by the shaft 77.

[0102] The clamping portion 70, in which the first movable clamping member 70L and the second movable clamping member 70R are mounted on the fixed clamping member 70C by the shaft 77, is mounted on the bending portion 71 by inserting the opening and closing pin 71a into the opening opening 78C, and a closing guide hole 77L and an opening and closing guide hole 77R. The bending section 71 is a movable element 83 and is configured to move relative to the clamping section 70.

[0103] When moving the bending section 71 in the forward direction indicated by arrow F, the opening and closing pin 71a also moves in the forward direction along with the movement of the bending section. When moving the opening and closing pin 71a in the forward direction a predetermined distance (greater than the first idle distance), the opening and closing pin 71a moves from the first idle portion 770L of the opening and closing guide hole 77L to the opening and closing portion 78L and starts to push the opening and a closing portion 78L. When the opening and closing portion 78L is pushed by the opening and closing pin 71a, the first movable clamping element 70L is moved to the fixed clamping element 70C by a rotation operation with the shaft 77 as the center of rotation, similarly when the opening and closing pin 71a pushes the opening and closing portion 78R of the opening and closing guide hole 77R, the second movable clamping element 70R is moved to the stationary clamping element 70C by a rotation operation with the shaft 77 as the center of rotation Eden.

[0104] As illustrated in FIG. 29A, 29B, 29C, 30A, 30B, and 30C described below, when the first movable clamping member 70L is moved away from the stationary clamping member 70C, the clamping portion 70 forms a feed path between the first movable clamping member 70L and the stationary clamping member 70C, and the wire W goes along the supply path. In contrast, when moving the first movable clamping member 70L to the stationary clamping member 70C, the wire W is clamped between the first movable clamping member 70L and the stationary clamping member 70C.

[0105] When moving the second movable clamping member 70R away from the stationary clamping member 70C, the clamping portion 70 forms a feed path through which the wire W passes between the second movable clamping member 70R and the stationary clamping member 70C. Thus, when the other end WE of the wire W is bent, the bending portion 71, as will be described later, the wire W is clamped. By moving the second movable clamping member 70R to the fixed clamping member 70C, the wire W can be supported or clamped between the second movable clamping member 70R and the stationary clamping member 70C.

[0106] The wire W, transmitted by the first feed gear 30L and the second feed gear 30R and passing through the parallel guide 4A in the cutting position P3, extends between the fixed clamping member 70C and the second movable clamping member 70R and is guided to the bending guide unit 5A. The wire W folded in the folding guide block 5A extends between the fixed clamping member 70C and the first movable clamping member 70L.

[0107] In this regard, the first clamping unit for gripping the side of one end WS of the wire W is formed by a fixed clamping member 70C and a first movable clamping member 70L. In addition, the fixed clamping member 70C and the second movable clamping member 70R form a second clamping unit for gripping the side of the other end WE of the wire W cut by the cutting unit 6A.

[0108] Since the first movable clamping element 70L and the second movable clamping element 70R can be mechanisms that open and close relative to the bending portion 71 (movable element), in contrast to the above example, an opening and closing pin (moving element) can be provided on a first movable clamping member 70L and a second movable clamping member 70R, and an opening and closing guide hole may be provided on the bending portion 71 (movable member).

[0109] FIG. 15A and 15B are views illustrating the main parts of the clamping portion in accordance with the present embodiment. The first movable clamping member 70L includes a protrusion 70Lb protruding in the direction of the stationary clamping member 70C, on a surface facing the stationary clamping member 70C. On the other hand, the fixed clamping element 70C includes a recess 73, which includes the protrusion 70Lb of the first movable clamping element 70L, on the surface facing the first movable clamping element 70L. Accordingly, when the wire W is clamped by the first movable clamping member 70L and the stationary clamping member 70C, the wire W bends toward the first movable clamping member 70L.

[0110] In particular, the fixed clamping member 70C includes a pre-bending portion 72. The pre-bending section 72 is configured so that a protrusion protruding in the direction of the first movable clamping element 70L is provided at the distal end along the feed direction of the forward wire W on the surface of the stationary clamping element 70C facing the first movable clamping element 70L.

[0111] To clamp the wire W between the fixed clamping member 70C and the first movable clamping member 70L and prevent the clamped wire W from falling out, the clamping portion 70 has a protruding portion 72b and a recessed portion 73 on the fixed clamping member 70C. The protruding portion 72b is provided at the proximal end along the forward direction of the wire W supplied in the forward direction on the surface of the fixed clamping member 70C facing the first movable clamping member 70L and protrudes to the first movable clamping member 70L. A recessed portion 73 is provided between the pre-bending portion 72 and the protruding portion 72b and has a recess shape in the opposite direction to the first movable clamping member 70L.

[0112] The first movable clamping member 70L has a recessed portion 70La into which the pre-bending portion 72 of the fixed clamping member 70C and a protruding portion 70Lb that enters the recessed portion 73 of the stationary clamping member 70C are included.

[0113] As a result, as illustrated in FIG. 15B, during the clamping operation of the side from one end WS of the wire W between the fixed clamping member 70C and the first movable clamping member 70L, the wire W is pressed by the pre-bending portion 72 to the side of the first movable clamping member 70L, and one end of the WS wire W is bent away from the wire W clamped by the fixed clamping member 70C and the second movable clamping member 70R.

[0114] Clamping the wire W by the fixed clamping member 70C and the second movable clamping member 70R includes a state in which the wire W can move between the fixed clamping member 70C and the second movable clamping member 70R with some degree of freedom. This is because during the operation of wrapping the wire W around the reinforcing bar S, it is necessary to move the wire W between the fixed clamping member 70C and the second movable clamping member 70R.

[0115] The bending section 71 is an example of a bending unit that bends the wire W so that the end of the wire W is closer to the binding object than the upper section of the wire W, which protrudes most from the binding object after the binding of the binding object. The bending section 71 bends the wire W, clamped by the clamping section 70, until the wire W is twisted by the clamping section 70.

[0116] A bending portion 71 is provided around the clamping portion 70 so as to cover part of the clamping portion 70, and is provided so as to be able to move along the axial direction of the clamping portion 70. In particular, the bending portion 71 approaches the side at one end WS of the wire W clamped by the fixed clamping member 70C and the first movable clamping member 70L, and the side of the other end WE of the wire W, clamped by the fixed clamping member 70C and the second movable clamping member 70R, and arranged to horizontally emescheniya in folding direction side with one end side WS and WE from the other end of the wire W in a direction from the bent wire W.

[0117] The bending section 71 is moved in the forward direction (see FIG. 1), indicated by arrow F, so that the side from one end WS of the wire W, clamped by the fixed clamping member 70C and the first movable clamping member 70L, is bent towards the reinforcing bar S with the clamping position as a fulcrum. In addition, the bending section 71 moves in the forward direction indicated by arrow F, as a result of which the side from the other end WE of the wire W between the fixed clamping member 70C and the second movable clamping member 70R bends towards the reinforcing bar S with the clamping position as the fulcrum.

[0118] The wire W is bent due to movement of the bending portion 71 so that the wire W passing between the second movable clamping member 70R and the stationary clamping member 70C is pressed by the bending portion 71, and the wire W falls out between the stationary clamping member 70C and the second movable clamping member 70R prevented.

[0119] The strapping unit 7A includes a length limiting unit 74 that limits the position of one end WS of the wire W. The length limiting unit 74 is formed by providing an element that abuts one end WS of the wire W against the wire feed path W passed between the fixed clamp element 70C and the first movable clamping element 70L. In order to provide a predetermined distance from the clamping position of the wire W by the fixed clamping member 70C and the first movable clamping member 70L in this example, a length limiting unit 74 is provided in the first guide block 50 of the bending guide block 5A.

[0120] The reinforcing bar strapping machine 1A includes a strapping unit drive mechanism 8A that drives the strapping unit 7A. The strapping unit drive mechanism 8A includes an engine 80, a rotating shaft 82, driven by an engine 80 by a speed reducer 81 that performs a reduction and increase in torque, a movable member 83 that is displaced during a rotation operation of the rotary shaft 82, and an element 84 rotation restrictions, which limits the rotation of the movable element 83 associated with the operation of rotation of the rotating shaft 82.

[0121] With respect to the rotary shaft 82 and the movable member 83, by using the screw portion provided on the rotary shaft 82 and the nut portion provided in the movable member 83, the rotation operation of the rotary shaft 82 is converted to moving the movable member 83 along the rotary shaft 82 in forward and reverse.

[0122] The movable member 83 is fixed to the rotation limiting member 84 in the work area in which the wire W is clamped by the clamping portion 70, and then the wire W is bent by the bending portion 71 so that the movable member 83 moves forward and backward in a state in which the rotation operation is limited to the rotation limiting element 84. In addition, the movable member 83 rotates during a rotation operation of the rotary shaft 82 while disengaging the rotation limiting member 84.

[0123] In the clamping portion 70, the clamping member 70C, the first movable clamping member 70L and the second movable clamping member 70R, between which the wire W is clamped, rotate together with the rotation of the movable member 83 and the bending portion 71.

[0124] The retraction mechanism 53a of the guide pin 53 is formed by a lever mechanism that converts the movement of the movable member 83 in the forward and reverse direction to the offset of the guide pin 53. The transmission mechanism 62 of the rotating blade portion 61 is formed by a lever mechanism that converts the movement of the movable member 83 in the forward and the opposite direction in the rotation operation of the rotating blade portion 61.

[0125] FIG. 16 is an external view illustrating an example of a reinforcing bar strapping machine according to the present embodiment. The reinforcing bar strapping machine 1A according to the present embodiment has a shape held by a worker in his hand, and includes a main body 10A and a handle portion 11A. As illustrated in FIG. 1 and the like, the reinforcing bar strapping machine 1A includes a strapping unit 7A and a strapping unit drive mechanism 8A in the main body 10A and has a folding guide unit 5A from one end side of the main body 10A in the longitudinal direction (first direction Y1) . In addition, the handle portion 11A is provided to protrude from the other end side in the longitudinal direction of the main body 10A in one direction (second direction Y2) substantially orthogonal (intersecting) to the longitudinal direction. In addition, the wire feed unit 3A is provided on the side along the second direction Y2 with respect to the strapping unit 7A, the offset unit 34 is provided on the other side along the first direction Y1 with respect to the wire feed unit 3A, i.e., from the side of the handle portion 11A relative to the wire feed unit 3A mainly the housing 10A, and the magazine 2A is provided from the side along the second direction Y2 with respect to the wire feed unit 3A.

[0126] In this regard, the handle portion 11A is provided on the other side along the first direction Y1 with respect to the magazine 2A. In the following description, with respect to the first direction Y1 along the direction in which the magazine 2A, the wire feed unit 3A, the biasing unit 34, and the handle portion 11A are located, the side on which the magazine 2A is provided is called the front side and the side on which the section is provided 11A handle, called the back side. In the bias unit 34, a second bias element 36 is provided in a direction substantially orthogonal to the wire feed direction W supplied by the first feed gear 30L and the second feed gear 30R, in the wire feed unit 3A behind the first feed gear 30L and the second feed gear 30R of the wire feed unit 3A and between the first feed gear 30L and the second feed gear 30R and the handle portion 11A. An operation button 38 for biasing the second biasing member 36 and a release lever 39 to release locking and locking of the operation button 38 are provided between the first feed gear 30L and the second feed gear 30R and the handle portion 11A.

[0127] It should be noted that the release function to release the lock and lock can be provided on the operation button 38 to bias the second biasing member 36 (also serving as a release lever). That is, the bias unit 34 includes a second bias element 36 for biasing the first feed gear 30L and the second feed gear 30R of the wire feed unit 3A towards and away from each other, and an operation button 38 that biases the second bias element 36 and protrudes outward from the main body 10A, and is located between the wire feed unit 3A and the handle portion 11A in the main body 10A.

[0128] Thus, by providing a mechanism for biasing the second feed gear 30R between the second feed gear 30R and the handle portion 11A behind the second feed gear 30R, as illustrated in FIG. 2, the mechanism for biasing the second feed gear 30R is not in the wire feed path W below the first feed gear 30L and the second feed gear 30R. In other words, the inner area of the magazine 2A, which forms the wire feed path W, under the first feed gear 30L and the second feed gear 30R can be used as the wire feed space 22, which is the space for loading the wire W into the wire feed unit 3A. That is, the wire loading space 22 for the wire feed unit 3A may be formed inside the magazine 2A.

[0129] A trigger 12A is provided on the front side of the handle portion 11A, and the control unit 14A controls the feed motor 33a and the motor 80 in accordance with the state of the switch 13A pressed when the trigger 12A is operated. In addition, a battery 15A is attached to the lower portion of the handle portion 11A.

An example of the operation of the machine for tying reinforcing bars in accordance with an embodiment of the invention

[0130] FIG. 17-24 are diagrams for explaining the operation of the reinforcing bar strapping machine 1A in accordance with the present embodiment, and FIG. 25A, 25B, and 25C are diagrams for explaining a wire winding operation around a reinforcing bar. FIG. 26A and 26B are explanatory views of a wire looping operation by a folding guide block, and FIG. 27A, 27B, and 27C are explanatory views of a wire bending operation. Additionally FIG. 28A, 28B, 28C and 28D are explanatory views illustrating in detail an example of a wire clamping and twisting operation. In addition, FIG. 29A, 29B, 29C and FIG. 30A, 30B, 30C are explanatory views illustrating in detail an example of a wire clamping and twisting operation. Next, with reference to the drawings, the operation of tying the reinforcing bar S with wire W using the machine 1A for tying the reinforcing bars in accordance with this embodiment will be described.

[0131] To load the wire W wound around a coil 20 located in the magazine 2A, first press the operating button 38 in the wire feed position illustrated in FIG. 5A in the direction of arrow T2. When the operation button 38 is pressed in the direction of the arrow T2, the guide inclined surface 39c of the release lever 39 is pushed, and the locking protrusion 39a exits the first locking recess 38a. As a result, the release lever 39 is displaced in the direction of the arrow U2.

[0132] When the operation button 38 is pressed in the wire loading position, as illustrated in FIG. 4B, the release lever 39 is pushed by the spring 39b in the direction of the arrow U1, and the locking protrusion 39a enters the second locking recess 38b of the operating button 38 and is locked. In this regard, the operation button 38 is held in the loading position of the wire.

[0133] When the operating button 38 is in the wire loading position, the second biasing member 36 is pushed by the operating button 38, and the second biasing member 36 biases the second feed gear 30R around the shaft 36a as a center of rotation away from the first feed gear 30L. In this regard, the second feed gear 30R is separated from the first feed gear 30L, and a wire W. may be inserted between the first feed gear 30L and the second feed gear 30R.

[0134] After loading the wire W, as illustrated in FIG. 4C, by depressing the release lever 39 in the direction of arrow U2, the locking protrusion 39a exits the second locking recess 38b of the operating button 38. As a result, the second biasing member 36 is pushed by the spring 37, and the second biasing member 36 is biased in the direction of pressing the second feed gear 30R to the first feed gear 30L around shaft 36a as a center of rotation. In this regard, the wire W is located between the first feed gear 30L and the second feed gear 30R.

[0135] When the operation button 38 is pressed in the direction of arrow T1 by the second biasing member 36 and shifted to the wire feed position, as illustrated in FIG. 4A, the locking protrusion 39a of the release lever 39 is locked in the first locking recess 38a of the operation button 38, and the operation button 38 is held in the wire feed position.

[0136] FIG. 17 illustrates the initial state after loading the wire, that is, the initial state in which the wire W is not yet supplied by the wire feed unit 3A. In the initial state, the end of the wire W is in the position P3 issuance for cutting. As illustrated in FIG. 17, in this example, the wire W in the cutting position P3 is parallelly arranged in a predetermined direction by passing through the parallel guide 4A (fixed blade portion 60) in which two wires W are provided in the cutting position P3.

[0137] The wires W between the cutting position P3 and the magazine 2A are arranged parallel in a predetermined direction parallel to the guide 4A in the intermediate position P2, parallel to the guide 4A at the insertion position P1, as well as the first feed gear 30L and the second feed gear 30R.

[0138] FIG. 18 illustrates the state in which the wire W is wound around the reinforcing bar S. When inserting the reinforcing bar S between the first guide block 50 and the second guide block 51 of the folding guide block 5A and the trigger 12A is activated, the feed motor 33a is driven in the normal rotation direction, and therefore, the first feed gear 30L rotates in the forward direction, and the second feed gear 30R rotates in the forward direction after the first feed gear 30L.

[0139] In this regard, two wires W are supplied in the forward direction due to the friction force generated between the first feed gear 30L and one wire W1, the friction force created between the second feed gear 30R and the other wire W2, and the friction force generated between one wire W1 and the other wire W2.

[0140] Two wires W extending between the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R, and two wires W extending from the first feed gear 30L and the second feed gear 30R are parallel to each other in a predetermined direction by providing parallel guides 4A on the proximal side and the far side of the wire feed unit 3A with respect to the forward direction of the wire W.

[0141] As illustrated in FIG. 28A, 29A and 30A, when feeding the wire W in the forward direction, the wire W passes between the fixed clamping member 70C and the second movable clamping member 70R and passes through the guide groove 52 of the first guide block 50 of the bending guide block 5A. As a result, the wire W is bent to be wrapped around the reinforcing bar S. The two wires W introduced into the first guide unit 50 are held in the state in which they are arranged in parallel by means of the parallel guide 4A in the issuing position P3 for cutting. In addition, since the two wires W are supplied in a state in which they are pressed against the outer wall surface of the guide groove 52, the wires W passing through the guide groove 52 are also held in a state in which they are parallel in a predetermined direction.

[0142] As illustrated in FIG. 26A, the movement of the wire W supplied from the first guide block 50 along the axial direction Ru1 of the loop Ru formed by wrapping around the wire is limited by the movable guide block 55 of the second guide block 51 for guiding the wall guide 55a to the fixed guide block 54. In FIG. 26B, the movement of the wire W, which is guided by the fixed guide block 54, along the radial direction of the loop Ru is limited by the wall surface 54a of the fixed guide block 54, and the wire W is guided between the fixed clamping member 70C and the first movable clamping member 70L. Thus, when feeding the distal end of the wire W to a position in which it abuts against the length limiting unit 74, the operation of the feed motor 33a is stopped.

[0143] A small amount of the wire W is fed forward until the distal end of the wire W abuts against the length limiting unit 74, and then the feeding is stopped, as a result of which the wire W wrapped around the reinforcing bar S is displaced from the state illustrated the solid line in FIG. 26B, in the direction of expansion in the radial direction of the loop Ru, as indicated by a dot-dash line with two dots. When the wire W wrapped around the reinforcing bar S is displaced in the radial expansion direction of the loop Ru1, the side from one end WS of the wire W guided between the fixed clamping member 70C and the first movable clamping member 70L of the clamping portion 70 is shifted in the opposite direction. In this regard, as illustrated in FIG. 26B, the position of the wire W in the radial direction of the loop Ru is limited by the wall surface 54a of the stationary guide unit 54, whereby the displacement of the wire W guided into the clamping portion 70 in the radial direction of the loop Ru is prevented and failure to be clamped is also prevented. In the present embodiment, even when the side from one end WS of the wire W guided between the fixed clamping member 70C and the first movable clamping member 70L is not displaced, and the wire W is shifted in the expanding direction in the radial direction of the loop Ru, the displacement of the wire W in the radial direction of the loop Ru is prevented by the stationary guide block 54, which prevents the occurrence of failure when clamping.

[0144] As a result, the wire W is wound around the reinforcing bar S in the form of a loop. At the same time, as illustrated in FIG. 25B, two wires W wrapped around the reinforcing bar S are held in a state in which they are parallel to each other without twisting. Upon detecting the opening of the movable guide unit 55 of the second guide unit 51 based on the output signal of the guide open / close sensor 56, the control unit 14A does not operate the feed motor 33a even when the trigger 12A is triggered. Instead, a notification unit (not illustrated) provides an alert, such as an indicator or a sound signal. This prevents failure in the direction of the wire W.

[0145] FIG. 19 illustrates a state in which the wire W is clamped by the clamping portion 70. After the wire W is cut off, the motor 80 is driven in the normal rotation direction, as a result of which the motor 80 moves the movable member 83 in the direction of the arrow F, which represents the forward direction. That is, with respect to the movable member 83, the rotation operation associated with the rotation of the engine 80 is limited to the rotation restriction member 84, and the rotation of the engine 80 is converted to linear motion. As a result, the movable member 83 moves in the forward direction. Simultaneously with the operation of the movable member 83 moving in the forward direction, the bending portion 71 moves in the forward direction. As illustrated in FIG. 29B, when the opening and closing pin 71a passes through the opening and closing portion 78L of the opening and closing guide hole 77L, the first movable clamping member 70L is moved to the stationary clamping member 70C by a rotation operation with the shaft 77 as the center of rotation. As a result, one end of the WS wire W is clamped.

[0146] Furthermore, as illustrated in FIG. 30B, when the opening and closing pin 71a passes through the opening and closing portion 78R of the opening and closing guide hole 77R, the second movable clamping member 70R is moved to the stationary clamping member 70C by a rotation operation with the shaft 77 as the center of rotation. As the second movable clamping member 70R moves to the stationary clamping member 70C, the wire W is clamped in a state in which it can move in the direction of travel.

[0147] In addition, the operation of the movable member 83 moving in the forward direction is transmitted to the retraction mechanism 53a, and the guide pin 53 is retracted from the path of the wire W.

[0148] FIG. 20 illustrates the state in which the wire W is wound around the reinforcing bar S. After the side from one end WS of the wire W is clamped between the first movable clamping member 70L and the stationary clamping member 70C, and the feed motor 33a is driven in the reverse rotation direction, the first the feed gear 30L rotates in the opposite direction, and the second feed gear 30R rotates in the opposite direction after the first feed gear 30L.

[0149] In this regard, the two wires W are drawn in the direction of the magazine 2A and are fed in the opposite (reverse) direction. During the reverse feed operation of the wire W, the wire W is tightly tightened on the reinforcing bar S. In this example, as illustrated in FIG. 25C, since the two wires are parallel to each other, an increase in the feed resistance due to twisting of the wires W during the wire feed operation W in the opposite direction can be prevented. In addition, if in the case of strapping the reinforcing bar S with one wire, as in the traditional example, and in the case of strapping the reinforcing bar S with two wires W, as in this example, the same strapping strength should be obtained, when using two wires W, the diameter of each wire W may be more subtle. In this regard, the wire W can be easily bent, and the wire W can be tightly tightened on the reinforcing bar S with little effort. In this regard, the wire W can be reliably tightened around the reinforcing bar S with little effort. In addition, when using two thin wires W, wire W is easier to shape in a loop, and it is also possible to reduce the load when cutting wire W. Along with this, you can reduce the size of each motor of the 1A machine for strapping reinforcing bars, and reduce the overall size of the main body by reducing the size of the mechanical plot. In addition, energy consumption can be reduced by reducing engine size and reducing load.

[0150] FIG. 21 illustrates a state in which wire W is cut off. After wrapping the wire W around the reinforcing bar S and cutting off the wire supply W, the motor 80 is driven in the normal rotation direction, thereby moving the movable member 83 in the forward direction. Simultaneously with the operation of the movable member 83 moving in the forward direction, the second movable clamping member 70R is shifted in the direction of approaching the stationary clamping member 70C, and the wire W is clamped. In addition, the operation of the forward-moving movable member 83 is transmitted by the transmission mechanism 62 to the cutting unit 6A, and the side from the other end WE of the wire W held by the second movable clamping member 70R and the stationary clamping member 70C is cut off during operation of the rotating blade portion 61 .

[0151] FIG. 22 illustrates a state in which the end of the wire W is bent in the direction of the reinforcing bar S. By further moving the movable member 83 in the forward direction after cutting the wire W, as illustrated in FIG. 28B, the bending portion 71 moves forward along with the movable member 83.

[0152] As illustrated in FIG. 27B and 27C, the bending section 71 moves in the direction of approach to the reinforcing bar S, which is the straight direction indicated by arrow F, the bending section includes a bending section 71b1 that comes into contact with the side from one end WS of the wire W, clamped a fixed clamping member 70C and a first movable clamping member 70L. In addition, the bending section 71 moves in the direction closer to the reinforcing bar S, which is the forward direction indicated by arrow F, the bending section 71 includes a bending section 71b2 that comes into contact with the side from the other end WE of the wire W, clamped a fixed clamping member 70C and a second movable clamping member 70R.

[0153] When moving in the forward direction indicated by arrow F by a predetermined distance, as illustrated in FIG. 28C, the bending section 71 pushes one end of WS of the wire W, clamped by the fixed clamping member 70C and the first movable clamping member 70L, in the direction of the reinforcing bar S on the bending section 71b1 and bends it in the direction of the reinforcing bar S with the clamping position as the fulcrum. With further movement of the bending portion 71 in the forward direction, as illustrated in FIG. 29C, the opening and closing pin 71a is moved into the opening and closing guide hole 77L, and thus, one end WS of the wire W is held between the first movable clamping member 70L and the stationary clamping member 70C in the clamped state. In addition, with further movement of the bending portion 71 in the forward direction, as illustrated in FIG. 30C, the opening and closing pin 71a is moved into the opening and closing guide hole 77R, and thus, one end WE of the wire W is held between the second movable clamping element 70R and the stationary clamping element 70C in the clamped state.

[0154] As illustrated in FIG. 27A and 27B, the clamping unit 70 includes a sliding portion 75 (the protruding portion 70Lb may also serve as a sliding portion 75) protruding in the direction of the fixed clamping member 70C from the far end side of the first movable clamping member 70L. The side from one end WS of the wire W, clamped by the fixed clamping member 70C and the first movable clamping member 70L, is bent towards the reinforcing bar S with the anti-slip portion 75 as a fulcrum in the clamping position of the fixed clamping member 70C and the first movable clamping member 70L bending section 71 in the forward direction indicated by arrow F. In FIG. 27B, the second movable clamping member 70R is not illustrated.

[0155] Furthermore, by moving the bending portion 71 in the forward direction indicated by the arrow F, the side from the other end WE of the wire W, clamped by the fixed clamping member 70C and the second movable clamping member 70R, is pushed in the direction of the reinforcing bar S by the bending portion 71b2 and bends towards the reinforcing bar S with the clamping position as the fulcrum.

[0156] As illustrated in FIG. 27A and 27C, the clamp portion 70 is provided with a non-slip portion 76 protruding in the direction of the fixed clamp member 70C from the far end side of the second movable clamp member 70R. The bending section 71 moves in the forward direction indicated by arrow F, so that the other end WE of the wire W, clamped by the fixed clamping member 70C and the second movable clamping member 70R, is bent towards the reinforcing bar S in the clamping position by the fixed clamping member 70C and the second movable clamping element 70R with anti-slip section 76 as a fulcrum. In FIG. 27C, the first movable clamping member 70L is not illustrated.

[0157] FIG. 23 illustrates a state in which wire W is twisted. After bending the end of the wire W toward the reinforcing bar S, the motor 80 is further driven in the normal rotation direction, as a result of which the motor 80 further moves the movable member 83 in the direction of the arrow F, which represents the forward direction. When the movable member 83 is moved to a predetermined position in the direction of the arrow F, the movable member 83 disengages from the rotation restriction member 84, and the rotation restraint of the movable member 83 by the rotation restriction member 84 is released. As a result, the motor 80 is further driven in the normal rotation direction, as a result of which the clamping portion 70 clamping the wire W rotates and twists the wire W, as illustrated in FIG. 28D. The clamping portion 70 is biased by a spring (not illustrated) in the opposite direction and twists the wire W, pulling it. In this regard, the wire W is not weakened, and the reinforcing bar S is tied with wire W.

[0158] FIG. 24 illustrates a state in which twisted wire W is released. After twisting the wire W, the motor 80 is driven in the reverse rotation direction so that the motor 80 moves the movable member 83 in the reverse direction indicated by arrow R. That is, with respect to the movable member 83, the rotation operation associated with the rotation of the motor 80 is limited to 84 rotation limits, and the rotation of the engine 80 is converted to linear motion. As a result, the movable member 83 moves in the opposite direction. Simultaneously with the operation of the movable member 83 moving in the opposite direction, the first movable clamping element 70L and the second movable clamping element 70R are displaced from the stationary clamping element 70C, and the clamping unit 70 releases the wire W. When completing the binding of the reinforcing bar S and removing the reinforcing bar S from reinforcing bar strapping machine 1A, usually the reinforcing bar S can engage in a guide block and can be difficult to remove, which in some cases degrades the performance of Ot. On the other hand, by allowing the movable guide block 55 of the second guide block 51 to rotate in the direction of the arrow H when removing the reinforcing bar S from the reinforcing bar strapping machine 1A, the movable guide block 55 of the second guide block 51 does not engage the reinforcing bar S, and, therefore, work efficiency is improved.

An example of the action and effect of a machine for tying reinforcing bars in accordance with an embodiment

[0159] In the configuration in accordance with the related art, in which the first movable clamping element and the second movable clamping element are opened and closed by parallel movement, the movement of the first movable clamping element and the second movable clamping element is guided by elements such as grooves and pins. For this reason, when foreign bodies, such as dust, enter the groove, the movement of the pin is difficult, and therefore, there is a possibility that the first movable clamping element and the second movable clamping element will not be able to move normally.

[0160] When the direction of the first movable clamping element and the second movable clamping element changes due to overload or the like. the direction of movement of the pin and the direction of passage of the grooves are offset from each other, and therefore, there is a possibility that the first movable clamping element and the second movable clamping element will not be able to move normally.

[0161] On the other hand, in the present embodiment, since the first movable clamping element 70L and the second movable clamping element 70R are displaced in the direction of contact with and detachment from the fixed clamping element 70C by the rotation operation with the shaft 77 as the center of rotation, they are practically not affected by dust or overload.

[0162] Compared to the configuration in which the pin slides in the groove, the accuracy of the shaft 77 is improved and the wear resistance is increased. For this reason, backlash of the first movable clamping member 70L and the second movable clamping member 70R relative to the stationary clamping member 70C and the play between the first movable clamping member 70L and the second movable clamping member 70R can be prevented. Thus, the wire W can be reliably clamped.

[0163] When the opening and closing direction of the first movable clamping element 70L and the second movable clamping element 70R is a left-right direction, and the passage direction of the opening and closing pin 71a is an up-down direction, the fixed clamping element 70C has a shape in which the upper and lower sides and the left and right sides are opened by the mounting portion 77C and the guide hole 78C.

[0164] In this regard, in the case of providing an element for coating the upper and lower sides and the left and right sides of the fixed clamping element 70C, a decrease in the strength of the fixed clamping element 70C can be prevented. However, the left and right sides of the fixed clamping member 70C interfere with the opening and closing operations of the first movable clamping member 70L and the second movable clamping member 70R, and therefore cannot be closed. Therefore, in this example, the bending portion 71 is provided with a covering portion 71c for covering the upper and lower sides of the fixed clamping member 70C that do not interfere with the opening and closing operations of the first movable clamping member 70L and the second movable clamping member 70R. As a result, a reduction in the strength of the fixed clamping member 70C can be prevented by providing a mounting portion 77C and a guide hole 78C, which are holes.

[0165] As illustrated in FIG. 13A, the bending portion 71 is shaped to cover the opening and closing guide hole 77L, the opening and closing guide hole 77R, the opening and closing portion 78L, the opening and closing portion 78R, and the guide hole 78C of the covering portion 71c. For this reason, the opening and closing guide hole 77L, the opening and closing guide hole 77R, the opening and closing portion 78L, the opening and closing portion 78R and the guide hole 78C are not open. Accordingly, dust entering the guide hole 78C or the like. can be prevented.

[0166] In addition, the shaft 77 is provided on an extended line of the travel path of the opening and closing pin 71a. Thus, it is possible to reduce the length of the fixed clamping member 70C in a left-right direction along the opening and closing directions of the first movable clamping member 70L and the second movable clamping member 70R. In addition, the length of the first movable clamping element 70L and the second movable clamping element 70R in the left-right direction can also be reduced.

[0167] Furthermore, since the shaft 77 is provided on an extended travel path of the opening and closing pin 71a, a substantial deviation of the direction of movement of the opening and closing pin 71a and the direction of passage of the guide hole 78C from each other is prevented, and the first movable clamping member 70L and the second movable clamping member 70R can operate normally.

[0168] FIG. 31A, 31B, and 32A show examples of operational effects of the reinforcing bar strapping machine according to the present embodiment, and FIG. 31C, 31D and 32B are examples of the operation and problems of a traditional reinforcing bar strapping machine. Below will be described an example of the operational effects of the machine for tying reinforcing bars in accordance with the present embodiment in comparison with the related prior art in relation to the operation of tying the reinforcing bar S with wire W.

[0169] As illustrated in FIG. 31C, in a traditional configuration in which one wire Wb of a given diameter (for example, from about 1.6 mm to about 2.5 mm) is wrapped around a reinforcing bar S, as illustrated in FIG. 31D, since the wire Wb has high stiffness, if the wire Wb is not wrapped around the reinforcing bar S with sufficient force, sagging J occurs during the winding operation of the wire Wb, and a gap is formed between the wire and the reinforcing bar S.

[0170] On the other hand, as illustrated in FIG. 31A, in the present embodiment, in which, unlike the traditional case, two small diameter wires W are wound around the reinforcing bar S (for example, from about 0.5 mm to about 1.5 mm), as illustrated in FIG. 31B, since the stiffness of the wire W is less than the stiffness of the traditional wire, even if the wire W is wound around the reinforcing bar S with less force than in the traditional case, the occurrence of sagging of the wire W during the winding operation of the wire W is prevented, and the wire is reliably wrapped around the reinforcing bar S in the linear section K. With respect to the function of tying the reinforcing bar S with wire W, the stiffness of the wire W varies not only depending on the diameter of the wire W, but also depending on the material ala, etc. For example, in the present embodiment, wire W having a diameter of from about 0.5 mm to about 1.5 mm is described as an example. However, if the material of the wire W is also taken into account, at least a tolerance difference may occur between the lower limit value and the upper limit value of the wire diameter W.

[0171] Moreover, as illustrated in FIG. 32B, in a traditional configuration in which one wire Wb of a given diameter is wound and twisted around the reinforcing bar S, since the wire Wb has high stiffness, even during the twisting operation of the wire Wb, the sagging of the wire Wb is not eliminated, and a gap is formed between the wire and the reinforcing bar S L.

[0172] On the other hand, as illustrated in FIG. 32A, in the present embodiment, in which two smaller wires W are wound and twisted around the reinforcing bar S of a smaller diameter as compared to the related art, since the stiffness of the wire W is less than the conventional case, during the twisting operation of the wire W, the gap M between the reinforcing bar S and wire can be eliminated in contrast to the traditional case, as a result of which the strength of the wire strapping W is increased.

[0173] When using two wires W, the holding force of the reinforcing bars can be equalized compared to the traditional case and the displacement between the reinforcing bars S after strapping can be prevented. In the present embodiment, two wires W are fed simultaneously (jointly), and the reinforcing bars S are tied together using two wires W supplied simultaneously (jointly). The simultaneous supply of two wires W means the supply of one wire W and the other wire W with essentially the same speed, that is, the relative speed of one wire W relative to the other wire W is essentially zero. In this example, the value is not necessarily limited to this value. For example, even if one wire W and the other wire W are fed at different speeds (at different times), two wires W move in parallel along the wire feed path W in a state in which two wires W are parallel to each other, therefore, provided that the wire W can be wound around the reinforcing bar S in a parallel state, which means that two wires are fed simultaneously. In other words, the total cross-sectional area of each of the two wires W is a factor in determining the holding force of the reinforcing bars, so that even if the feed moments of the two wires W are offset, the same result can be obtained from the point of view of providing the holding force of the reinforcing bars. However, since for the operation of simultaneous (joint) feeding of two wires W, it is possible to reduce the time required for feeding, compared with the operation of shifting the moment of feeding two wires W, it is preferable to feed two wires W simultaneously (together), since this leads to an increase in the speed of strapping.

[0174] FIG. 33A illustrates an example of the operational effect of a reinforcing bar strapping machine according to the present embodiment, and FIG. 33B illustrates an example of operation and a problem of a conventional reinforcing bar strapping machine. Below will be described an example of the operational effect of the machine for tying reinforcing bars in accordance with this embodiment in comparison with the traditional case in relation to the shape of the wire W, tying the reinforcing bar.

[0175] As illustrated in FIG. 33B, in the case of a wire W tied around a reinforcing bar S in a conventional reinforcing bar strapping machine, one end WS and the other end WE of the wire W are oriented in the opposite direction to the reinforcing bar S. In this regard, one end WS and the other end WE of the wire W, which are the far end side of the twisted portion of the wire W, tying the reinforcing bar S, protrude strongly from the reinforcing bar S. If the far end end of the wire W protrudes strongly, there is a possibility that the fact that the protruding section will interfere with operations and make work difficult.

[0176] Also, after tying the reinforcing bars S, the place where the reinforcing bars S are laid is poured with concrete 200. At the same time, to prevent the protrusion of one end WS and the other end WE of the wire W from concrete 200, the distance from the end of the wire W tied around the reinforcing bar S, in the example of FIG. 33B, the distance from one end WS of the wire W to the surface 201 of the poured concrete 200 should maintain a predetermined size S1. In this regard, in the configuration in which one end WS and the other end WE of the wire W are facing in the opposite direction to the reinforcing bar S, the distance S12 from the laying position of the reinforcing bar S to the surface 201 of the concrete 200 becomes large.

[0177] On the other hand, in the reinforcing bar strapping machine 1A according to the present embodiment, the wire W is bent by the bending portion 71 so that one end WS of the wire W wrapped around the reinforcing bar S is located closer to the reinforcing bar S than the first the bent portion WS1, which is the bent portion of the wire W, and the other end WE of the wire W, wound around the reinforcing bar S, is located closer to the reinforcing bar S than the second bent portion WE1, which is a bent portion wire W. In the reinforcing bar strapping machine 1A according to the present embodiment, wire W is bent by the bending portion 71 so that one of (i) the bent portion bent by the pre-bending portion 72 during the operation of clamping the wire W by the first movable clamping member 70L and the fixed clamping member 70C, and (ii) the bent portion bent by the fixed clamping member 70C and the second movable clamping member 70R during the strapping operation of the wire W around the reinforcing bar S, becomes the upper portion of the dies W. The upper section is the most protruding section in the direction of separation of the wire W from the reinforcing bar S.

[0178] As a result, as illustrated in FIG. 33A, a wire W tied around a reinforcing bar S in a reinforcing bar strapping machine 1A according to the present embodiment has a first bent portion WS1 between a twisted portion WT and one end WS, and a side from one end WS of the wire W is bent towards the reinforcing bar the rod S so that one end WS of the wire W is located closer to the reinforcing bar S than the first bent portion WS1. The second bent portion WE1 is formed between the twisted portion WT and the other end WE of the wire W. The side from the other end WE of the wire W is bent towards the reinforcing bar S so that the other end WE of the wire W is located closer to the side of the reinforcing bar S than the second bent portion WE1 .

[0179] In the example illustrated in FIG. 33A, two bent portions are formed on the wire W, in this example, the first bent portion WS1 and the second bent portion WE1. Of the two bent sections in the wire W tied around the reinforcing bar S, the first bent section WS1, the most protruding in the direction from the reinforcing bar S (the direction opposite to the reinforcing bar S), is the upper section Wp. Both one end WS and the other end WE of the wire W are bent so as not to protrude beyond the upper portion Wp in the direction opposite to the reinforcing bar S.

[0180] Thus, by placing one end WS and the other end WE of the wire W so that they do not protrude beyond the upper portion Wp formed by the bent portion of the wire W in the direction opposite to the reinforcing bar S, it is possible to prevent a decrease in the operating efficiency due to beyond the protruding end of the wire W. Since the side from one end WS of the wire W is bent towards the reinforcing bar S, and the side from the other end WE of the wire W is bent towards the reinforcing bar S, the amount of protrusion from the far end side from The study area of WT wire W is smaller than in the traditional case. In this regard, the distance S2 from the laying position of the reinforcing bar S to the surface 201 of concrete 200 may be less than in the traditional case. In this regard, it is possible to reduce the amount of concrete used.

[0181] In the case of the reinforcing bar strapping machine 1A according to the present embodiment, the wire W is wound around the reinforcing bar S in the forward direction, and the side at one end WS of the wire W wrapped around the reinforcing bar S by feeding the wire W in the opposite direction direction, is bent toward the reinforcing bar S by the bending portion 71 in the state in which it is clamped by the fixed clamping member 70C and the first movable clamping member 70L. In addition, the side from the other end WE of the wire W cut by the cutting unit 6A is bent toward the reinforcing bar S by the bending portion 71 in the state in which it is clamped by the fixed clamping member 70C and the second movable clamping member 70R.

[0182] As a result, as illustrated in FIG. 27B, the clamping position of the fixed clamping member 70C and the first movable clamping member 70L acts as a fulcrum 71c1, and, as illustrated in FIG. 27C, the clamping position of the fixed clamping member 70C and the second movable clamping member 70R acts as a fulcrum 71c2, and the wire W can be bent. In addition, the bending section 71 can exert a force that exerts pressure on the wire W in the direction of the reinforcing bar S by shifting in the approximate direction to the reinforcing bar S.

[0183] As described above, in the reinforcing bar strapping machine 1A according to the present embodiment, since the wire W is securely clamped in the clamping position and the wire W is bent with the support points 71c1 and 71c2, it is possible that the force pressing the wire W is precisely applied in the desired direction (towards the reinforcing bar S), not being distributed in another direction, which leads to the exact bending of the sides from the ends WS and WE of the wire W in the required direction (towards the reinforcing bar S).

[0184] On the other hand, for example, in the case of a traditional strapping machine, which exerts a force in the direction of twisting the wire W in a state in which the wire W is not clamped, the end of the wire W can be bent in the direction of twisting the wire W. But the bending force of the wire W is applied in a state in which the wire W is not pinched, so that the bending direction of the wire W is not fixed, and in some cases the end of the wire W may be facing outward opposite the reinforcing bar S.

[0185] However, in the present embodiment, as described above, since the wire W is securely clamped in the clamping position and the wire W is bent with the support points 71c1 and 71c2, the sides of the ends WS and WE of the wire W can be accurately directed towards the reinforcing bar S .

[0186] In addition, if the end of the wire W is to be bent toward the reinforcing bar S after twisting the wire W to tie the reinforcing bar S, there is a possibility of weakening the strapping in which the wire W is twisted and reducing the strength of the strapping. In addition, when twisting the wire W to bind the reinforcing bar S and further attempting to bend the end of the wire by applying forces in the direction of additional twisting of the wire W, there is a possibility of a break in the place of the strapping in which the wire W. is twisted.

[0187] On the other hand, in the present embodiment, the side from one end of WS and the side from the other end of WE of the wire W are bent toward the reinforcing bar S until the wire W is twisted to tie the reinforcing bar S, so that the strapping point in which the wire W is twisted , does not weaken, and the strength of the strapping does not decrease. Also, after twisting the wire W for tying the reinforcing bar S in the direction of twisting the wire W, no force is applied, so that the strapping point in which the wire W is twisted does not break.

[0188] FIG. 34A and 35A show examples of operational effects of the reinforcing bar strapping machine according to the present embodiment, and FIG. 34B and 35B show examples of the operation and problems of a traditional reinforcing bar strapping machine. Below will be described an example of the operational effect of the machine for tying reinforcing bars in accordance with this embodiment in comparison with the traditional case with respect to preventing the loss of wire W from the clamping unit during the operation of winding wire W around the reinforcing bar S.

[0189] As illustrated in FIG. 34B, the conventional clamping unit 700 of the reinforcing bar strapping machine includes a fixed clamping member 700C, a first movable clamping member 700L and a second movable clamping member 700R, and a length limiting unit 701 against which the wire W abuts is provided in the first movable clamping member 700L. wrapped around reinforcing bar S.

[0190] During the operation of feeding the wire W in the opposite direction (retracting) and wrapping it around the reinforcing bar S and during the operation of twisting the wire W with the clamping unit 700, the wire W clamped by the fixed clamping member 700C and the first movable clamping member 700L may fall out if the distance N2 from the clamping position of the wire W by the fixed clamping member 700C and the first movable clamping member 700L to the length limiting unit 701 is short.

[0191] In order to prevent the clamped wire W from falling out, it is simply necessary to increase the distance N2. However, for this purpose, it is necessary to increase the distance from the clamping position of the wire W in the first movable clamping member 700L to the length limiting unit 701.

[0192] However, as the distance from the clamping position of the wire W in the first movable clamping member 700L to the length limiting unit 701 increases, the size of the first movable clamping member 700L increases. Therefore, in the traditional configuration, it is not possible to increase the distance N2 from the clamping position of the wire W by the fixed clamping member 700C and the first movable clamping member 700L to one end WS of the wire W.

[0193] On the other hand, as illustrated in FIG. 34A, in the clamping unit 70 in accordance with the present embodiment, the length limiting unit 74 against which the wire W abuts is configured as a separate component independent of the first movable clamping element 70L.

[0194] This makes it possible to increase the distance N1 from the clamping position of the wire W in the first movable clamping member 70L to the length limiting unit 74 without increasing the size of the first movable clamping member 70L.

[0195] In this regard, even if the first movable clamping member 70L does not increase, it is possible to prevent the loss of the wire W clamped by the fixed clamping member 70C and the first movable clamping member 70L during the reverse feed of the wire W to wrap around the reinforcing bar S and during the operation of twisting the wire W by the clamping unit 70.

[0196] As illustrated in FIG. 35B, the conventional clamping unit 700 of the reinforcing bar strapping machine on the surface of the first movable clamping member 700L facing the fixed clamping member 700C is provided with a protrusion protruding in the direction of the fixed clamping member 700C and a recess in which the fixed clamping member 700C is included, thereby forming a pre-bending portion 702.

[0197] As a result, during the clamping operation of the wire W by the first movable clamping member 700L and the stationary clamping member 700C, the side at one end WS of the wire W protruding from the clamping position of the first movable clamping member 700L and the stationary clamping member 700C is bent, and during the operation feeding the wire W in the opposite direction for winding around the reinforcing bar S and the operation of twisting the wire W with the clamping unit 700, the effect of preventing the loss of wire W.

[0198] However, since the side from one end WS of the wire W bends inwardly in the direction of the wire W extending between the fixed clamping member 700C and the second movable clamping member 700R, the bent side from one end WS of the wire W can mesh with the wire W fed in the opposite direction direction for winding around reinforcing bar S.

[0199] When the bent side of the wire WS is wound from one end WS by the wire W supplied in the opposite direction for winding around the reinforcing bar S, it is possible that the winding of the wire W will be insufficient or the twisting of the wire W will be insufficient.

[0200] On the other hand, in the clamping unit 70 according to the present embodiment, as illustrated in FIG. 35A, on a surface of the stationary clamping member 70C facing the first movable clamping member 70L, a protrusion protruding in the direction of the first movable clamping member 70L and a recess into which the first movable clamping member 70L is provided are formed to form a pre-bending portion 72.

[0201] Thus, during the clamping operation of the wire W by the first movable clamping member 70L and the stationary clamping member 70C, one end WS of the wire W protruding from the clamping position of the first movable clamping member 70L and the stationary clamping member 70C is bent, one end of the wire WS being bent W is clamped at three points: a protrusion formed by the pre-bending portion 72 in the stationary clamping member 70C, a protrusion formed by the first movable clamping member 70L and entering the recess of the pre-bending portion 72 bki, and another protrusion, formed immobile clamping element 70C. In this regard, it is possible to obtain the effect of preventing slipping of the wire W during the operation of feeding the wire W in the opposite direction and winding it around the reinforcing bar S and during the operation of twisting the wire W by the clamping portion 70.

[0202] The side from one end WS of the wire W bends outwardly opposite to the wire W extending between the fixed clamping member 70C and the second movable clamping member 70R, so that the bent side on one end WS of the wire W contacts the wire W fed back to the winding around the reinforcing bar S, is prevented.

[0203] Thus, during the operation of feeding the wire W in the opposite direction for winding around the reinforcing bar S, the loss of the wire W from the clamping unit 70 is prevented, which ensures a reliable winding of the wire W, and during the operation of twisting the wire W, it is possible to reliably wire the wire W .

[0204] Next, problems of the guide forming the feed path used for wrapping the wire around the reinforcing bar S will be described. In the reinforcing bar strapping machine, in which the wires are fed and wrapped around the reinforcing bar and then twisted to strand the reinforcing bar, a loop-shaped wire with it expands with difficulty in the radial direction of the loop, so that the guide forming the feed path used to wind the wire around the reinforcing bar is movable.

[0205] Moreover, in the machine for tying reinforcing bars in accordance with the related prior art having a configuration in which, after feeding the wires in the forward direction and winding around the reinforcing bar, the wires are fed in the opposite direction and cut off while being wrapped around the reinforcing bar, and in a position in which one end side and the other end side of the wire intersect each other, twisting is performed to tie the reinforcing bar, the wire feed is temporarily stopped for switching I am the wire feed direction.

[0206] When the wire is temporarily cut off, a small amount of wire is fed in the forward direction until the wire is cut off, and thus the wire wrapped around the strapping is shifted in the direction of radial expansion. For this reason, in the machine for tying reinforcing bars in accordance with the related prior art, the guide forming the feed path for wrapping the wire around the reinforcing bar is fixed. In this regard, the reinforcing bar engages the guide block, and its extraction is difficult, therefore, the efficiency decreases.

[0207] FIG. 36A and 36B are examples of operational effects of the reinforcing bar strapping machine according to the present embodiment. Examples of operational effects of the reinforcing bar strapping machine according to the present embodiment will be described below with respect to the operation of inserting the reinforcing bars into the bending guide block and the operation of extracting the reinforcing bar from the bending guide block. For example, in the case of tying the reinforcing rods S forming the base with the wire W, when using the reinforcing bar tying machine 1A, the opening between the first guide unit 50 and the second guide unit 51 of the bending guide unit 5A is facing down.

[0208] When the strapping operation is performed, the opening between the first guide block 50 and the second guide block 51 is directed downward, and the reinforcing bar strapping machine 1A moves downward, as indicated by arrow Z1 illustrated in FIG. 36A, and the reinforcing bar S enters the opening between the first guide block 50 and the second guide block 51.

[0209] Upon completion of the strapping operation and moving the reinforcing bar strapping machine 1A in the transverse direction, indicated by arrow Z2, as illustrated in FIG. 36B, the second guide block 51 is pressed against the reinforcing bar S tied with wire W, and the movable guide block 55 from the far end side of the second guide block 51 is rotated in the direction of the arrow H around the shaft 55b as a center of rotation.

[0210] In this regard, each time when tying the reinforcing bar S with wire W, the tying operation can be performed sequentially by simply moving the machine 1A for strapping the reinforcing bars in the transverse direction without each time lifting the machine 1A for strapping the reinforcing bars. In this regard, since it is simple enough to move the machine 1A for strapping reinforcing bars in the transverse direction compared to moving the machine 1A for strapping reinforcing bars each time up and down, it is possible to reduce restrictions on the direction of movement and the number of movements of the machine 1A for strapping reinforcing bars in during the operation of extracting the reinforcing bar S tied with a wire W, which leads to an increase in operating efficiency.

[0211] In addition, as illustrated in FIG. 26B, the stationary guide block 54 of the second guide block 51 is fixed without bias and is configured to limit the position of the wire W in the radial direction during the tying operation described above. Accordingly, during the operation of winding the wire W around the reinforcing bar S, the position of the wire W in the radial direction Ru2 can be limited by the wall surface 54a of the fixed guide unit 54, and the displacement of the direction of the wire W directed to the clamping portion 70 can be prevented, which leads to prevention occurrence of failure when clamping. As described above, the reinforcing bar strapping machine according to the related art, in which the wires are wound around the reinforcing bar and then twisted to strand the reinforcing bar, has a configuration in which the loop-like wire is hardly expanded in the radial direction of the loop, since there is no feed for retraction of the wire, and there is no operation to temporarily stop the wire feed and change the direction of feed. For this reason, there is no need to provide a guide corresponding to the fixed guide block of the present embodiment. However, even in such a machine for strapping reinforcing bars, when using the fixed guide block and the movable guide block in accordance with the invention, radial expansion of a loop of wire wrapped around the reinforcing bar can be prevented.

[0212] An example of the operational effect of the reinforcing bar strapping machine according to the present embodiment will be described with respect to the displacement unit 34. In the reinforcing bar strapping machine 1A according to the present embodiment, as illustrated in FIG. 2, the bias unit 34 includes a second bias element 36 in a direction substantially orthogonal to the wire feed direction W from the rear side of the first feed gear 30L and the second feed gear 30R, i.e., between the first feed gear 30L and the second feed gear 30R and the portion 11A crank. An operation button 38 for biasing the second biasing member 36 and a release lever 39 for locking and unlocking the operation button 38 are provided between the first feed gear 30L and the second feed gear 30R and the handle portion 11A.

[0213] Thus, by providing a mechanism to bias the second feed gear 30R between the second feed gear 30R and the handle portion 11A from the rear side of the second feed gear 30R, there is no need to provide a mechanism to bias the second feed gear 30R on the wire feed path W, which is located under the first feed gear 30L and the second feed gear 30R.

[0214] This allows the magazine 2A to be positioned closer to the wire feed unit 3A compared to a configuration in which a mechanism for biasing a pair of feed gears is provided between the wire feed unit and the magazine, thereby reducing the size of the device. In addition, since there is no operation button 38 provided between the magazine 2A and the wire feed unit 3A, the magazine 2A may be located closer to the wire feed unit 3A.

[0215] Furthermore, since the magazine 2A may be located closer to the wire feed unit 3A, as illustrated in FIG. 16, in a magazine 2A containing a cylindrical coil 20, a protruding portion 21 that protrudes in accordance with the shape of the coil 20 may be located above the mounting position of the battery 15A. In this regard, the protruding portion 21 may be located closer to the handle portion 11A, and the size of the device may be reduced.

[0216] In addition, since the mechanism for biasing the second feed gear 30R is not provided on the wire feed path W under the first feed gear 30L and the second feed gear 30R, a space 22 for wire loading for the wire feed unit 3A is formed in the magazine 2A, and there is no element preventing the loading of the wire W, whereby the loading of the wire W can be easily performed.

[0217] In the wire feed unit formed by the pair of feed gears, a biasing member is provided for separating one feed gear from another feed gear and a holding member that holds the biasing member in a state in which one feed gear is separated from the other feed gear. In this configuration, when pushing one feed gear away from another feed gear due to deformation of wire W or the like. there is a possibility that the biasing element can be fixed by the holding element so that one feed gear is held in a state in which it is separated from the other feed gear.

[0218] If one feed gear is held in a state in which it is separated from the other feed gear, wire W cannot be gripped by a pair of feed gears, and wire feed W cannot be performed.

[0219] On the other hand, in the reinforcing bar strapping machine 1A according to the present embodiment, as illustrated in FIG. 4A, the first biasing member 35 and the second biasing member 36, which are biasing members for separating the second feed gear 30R from the first feed gear 30L, and the operation button 38 and the release lever 39 to release the lock and lock in the state in which the second feed gear 30R is separated from the first feed gear 30L, made as independent components.

[0220] Accordingly, as illustrated in FIG. 4D when pushing the second feed gear 30R away from the first feed gear 30L due to deformation of the wire W or the like. the second biasing element 36 presses on the spring 37 to bias, but is not fixed. In this regard, the second feed gear 30R can always be pushed in the direction of the first feed gear 30L by the force of the spring 37, and even if the second feed gear 30R is temporarily separated from the first feed gear 30L, the state in which the wire W is clamped by the first feed gear 30L and the second feed gear 30R, can be restored, and the wire feed W can be continued.

A modified example of a machine for tying reinforcing bars in accordance with an embodiment of the invention

[0221] As a machine 1A for tying reinforcing bars in accordance with the present embodiment, a configuration is described in which two wires W are used, but the reinforcing bar S can be tied with one wire W or two or more wires W.

[0222] In the clamping portion 70, the first movable clamping element 70L and the second movable clamping element 70R open and close at the same time. On the other hand, since it is sufficient that the wire W is sandwiched between the first movable clamping element 70L and the stationary clamping element 70C during the operation of returning the wire W, the operation of the second movable clamping element 70R may precede the operation of the first movable clamping element 70L. The response time of the first movable clamping element 70L and the second movable clamping element 70R may be controlled by the shape of the opening and closing guide hole 77L and the opening and closing guide hole 77R.

[0223] FIG. 37A, 38B, 37C, 37D, and 37E are diagrams illustrating modified examples of a parallel guide according to the present embodiment. In the parallel guide 4B illustrated in FIG. 37A, the cross-sectional shape of the hole 4BW, that is, the cross-sectional shape of the hole 4BW in the direction perpendicular to the wire feed direction W, is rectangular, and the longitudinal direction and the transverse direction of the hole 4BW are linear. In the parallel guide 4B, the length L1 in the longitudinal direction (larger size) of the hole 4BW is slightly more than two or more times the diameter r of the wire W in a state in which the wires W are located along the radial direction, the length L2 in the transverse direction (smaller size) is slightly exceeds the diameter r of one wire W. In the parallel guide 4B of this example, the length L1 of the hole 4BW in the longitudinal direction is slightly more than twice the diameter r of the wire W.

[0224] In the parallel guide 4C illustrated in FIG. 37B, the longitudinal direction of the hole 4CW is rectilinear and the transverse direction is triangular. In the parallel guide 4C in a state in which a plurality of wires W are parallel in the longitudinal direction of the hole 4CW, and the wire W can be guided in an inclined plane in the transverse direction, the longitudinal length L1 of the hole 4CW is slightly more than two or more times the diameter r of the wire W in the state in which the wires W are located along the radial direction, and the transverse length L2 slightly exceeds the diameter r of the wire W.

[0225] In the parallel guide 4D illustrated in FIG. 37C, the longitudinal direction of the hole 4DW has a curved shape that is curved inward in a convex shape, and the transverse direction has an arc shape. That is, the shape of the hole 4DW corresponds to the external shape of the parallel wires W. In the parallel guide 4D, the length L1 in the longitudinal direction of the hole 4DW is slightly more than two or more times the diameter r of the wire W in the state in which the wires W are located along the radial direction, the length L2 in the transverse direction, slightly exceeds the diameter r of one wire W. In the parallel guide 4D in the present example, the length L1 in the longitudinal direction is slightly more than two times the diameter r of the wire W.

[0226] In the parallel guide 4E illustrated in FIG. 37D, the longitudinal direction of the 4EW hole has a curved shape, curved outwardly in a convex shape, and the transverse direction has an arc shape. That is, the 4EW hole is elliptical. The parallel guide 4E has a length L1 in the longitudinal direction of the hole 4EW, slightly more than two or more times the diameter r of the wire W in a state in which the wires W are located along the radial direction, and a length L2 in the transverse direction slightly larger than the diameter r of one wire W. In this example, the parallel guide 4E has a length L1 in the longitudinal direction, slightly more than two times the diameter r of the wire W.

[0227] The parallel guide 4F illustrated in FIG. 37E includes a plurality of holes 4FW corresponding to the number of wires W. Each wire W passes through its own hole 4FW adjacent to each other. In the parallel guide 4F, each hole 4FW has a diameter (length) L1 slightly larger than the diameter r of the wire W, and the direction in which the plurality of wires W is parallel is limited by the direction in which the holes 4FW are located.

[0228] FIG. 38 is a diagram illustrating a modified example of a guide groove in accordance with the present embodiment. The guide groove 52B has a width (length) L1 and depth L2 slightly greater than the diameter r of the wire W. Between one guide groove 52B along which one wire W passes and another guide groove 52B along which the other wire W passes, a dividing wall section is formed along the wire feed direction W. The first guide block 50 delimits the direction in which the plurality of wires are parallel to each other by the direction in which the plurality of guide grooves 52B are located.

[0229] FIG. 39A and 39B are diagrams illustrating modified examples of a wire feed unit according to the present embodiment. The wire feed unit 3B illustrated in FIG. 39A includes a first wire feed unit 35a and a second wire feed unit 35b that separately feed wire W. The first wire feed unit 35a and the second wire feed unit 35b are provided with a first feed gear 30L and a second feed gear 30R, respectively.

[0230] Each wire W separately supplied by the first wire feed unit 35a and the second wire feed unit 35b is arranged in parallel in a predetermined direction parallel to the guide 4A illustrated in FIG. 5A, 5B or 5C, or the parallel guides 4B-4E illustrated in FIG. 37A, 37B, 37C or 37D, and the guide groove 52 illustrated in FIG. 6.

[0231] The wire feed unit 3C illustrated in FIG. 39B includes a first wire feed unit 35a and a second wire feed unit 35b that separately feed wire W. The first wire feed unit 35a and the second wire feed unit 35b are provided with a first feed gear 30L and a second feed gear 30R, respectively.

[0232] Each of the wires W separately supplied by the first wire feed unit 35a and the second wire feed unit 35b is arranged parallel in a predetermined direction parallel to the guide 4F illustrated in FIG. 37E and the guide groove 52B illustrated in FIG. 39B. In the case of the wire feed unit 30C, since the two wires W are guided independently, if the first wire feed unit 35a and the second wire feed unit 35b can be independently driven, it is also possible to shift the feed time of the two wires W. Even if the winding operation of the reinforcing bar S is performed by beginning to feed another wire W from the middle of the winding operation of the reinforcing bar S of one of the two wires W, it is believed that two wires W are fed simultaneously. Also, although the feed of two wires W starts simultaneously, if the feed speed of one wire W is different from the feed speed of the other wire W, it is believed that two wires W are also fed simultaneously.

[0233] In the case of the reinforcing bar strapping machine 1A according to the present embodiment, the length limiting unit 74 is provided in the first guide unit 50 of the folding guide unit 5A, but can also be provided in the first movable clamping member 70L or the like, or elsewhere, provided that it is a component independent of the clamping portion 70, for example, a structure that supports the clamping portion 70.

[0234] In addition, before the bending operation of the side from one end WS and the side from the other end WE of the wire W to the side of the reinforcing bar S by the bending section 71, the rotation operation of the clamping section 70 can be started, and therefore, the operation of twisting the wire can be started W. Furthermore, after the start of the operation of twisting the wire W due to the beginning of the operation of rotating the clamping portion 70 and before the completion of the operation of twisting the wire W, the operation of bending the side from one end of WS and the side from the other can be started and completed. WE end toward rebar S bending portion 71.

[0235] In addition, although the bending portion 71 is integrally formed with the movable member 83 as the bending unit, the clamping portion 70 and the bending portion 71 may be driven by an independent drive unit, for example, an engine. Furthermore, instead of the bending portion 71, as a bending unit in any of the fixed clamping member 70C, the first movable clamping member 70L and the second movable clamping member 70R, a bending portion having a concave-convex shape or the like can be provided for applying a bending the force by which the wire W is bent to the reinforcing bar S during the operation of clamping the wire W.

[0236] FIG. 40A, 40B and 40C are explanatory views illustrating modified examples of the present embodiment. In the reinforcing bar strapping machine 1A according to the present embodiment, the bending section 71 allows one end WS of the wire W to be placed closer to the reinforcing bar S than the first bent portion W1 of the wire W, and allows the other end WE of the wire W to be placed wrapped around the reinforcing bar S, closer to the reinforcing bar S, than the second bent portion WE1 of the wire W. In the example illustrated in FIG. 40A, since the first bent portion WS1, which is the most protruding portion in the opposite direction of the reinforcing bar S, is the upper portion Wp, one end WS and the other end WE of the wire W may not protrude in the opposite direction of the reinforcing bar S, beyond the upper portion Wp formed in the first bent portion WS1. For this reason, as illustrated in FIG. 40A, for example, if one end WS of the wire W is bent to the reinforcing bar S in the first bent portion WS1, one end WS of the wire W may not be facing the reinforcing bar S.

[0237] As illustrated in FIG. 40B, the bending unit may be provided so that the first bent portion WS2 and the second bent portion WE2 are bent in a bent shape. In this case, since the most protruding portion in the direction opposite to the reinforcing bar S is the first bent portion WS2, the first bent portion WS2 becomes the upper portion Wp, and one end WS and the other end WE of the wire W may not protrude in the direction opposite to the reinforcing bar the rod S, beyond the upper portion Wp formed in the first bent portion WS2.

[0238] Furthermore, as illustrated in FIG. 40C, one end WS of the wire W is bent to the reinforcing bar S so that one end WS of the wire W is located closer to the reinforcing bar S than the first bent portion WS1. In addition, the other end WE of the wire W is bent to the reinforcing bar S so that the other end WE of the wire W is located closer to the reinforcing bar S than the second bent portion WE2. Thus, in the wire W for tying the reinforcing bar S, a second bent portion WE1 may be formed, which protrudes most in the opposite direction to the reinforcing bar S as the upper portion Wp, and both of one end WS and the other end WE of the wire W are bent in this way that they do not protrude in the direction opposite to the reinforcing bar S, beyond the upper portion Wp.

[0239] FIG. 41A and 41B are views illustrating modified examples of a second guide block according to the present embodiment. The bias direction of the movable guide block 55 of the second guide block 51 is limited by the guide shaft 55c and the guide groove 55d along the bias direction of the movable guide block 55. For example, as illustrated in FIG. 41A, the movable guide unit 55 includes a guide groove 55d extending along the direction of movement of the movable guide unit 55 with respect to the first guide unit 50, i.e., the direction of movement of the movable guide unit 55 closer to and from the first guide unit 50. The stationary guide unit 54 includes a guide shaft 55c that is inserted into the guide groove 55d and is movable in the guide groove 55d. As a result, the movable guide block 55 is displaced from the guide position to the retracted position by parallel movement in the direction in which the movable guide block 55 comes into contact with and is separated from the first guide block 50 (up and down direction in Fig. 41A).

[0240] Furthermore, as illustrated in FIG. 41B, a guide groove 55d extending in the longitudinal direction may be provided in the movable guide unit 55. As a result, the movable guide unit 55 is displaced from the guide position to the retracted position by moving in a longitudinal direction in which it extends from the front end, which is one end of the main body 10A, and retracts inward of the main body 10A. In this case, the guide position is a position in which the movable guide unit 55 protrudes from the front end of the main body 10A so that the wall surface 55a of the movable guide unit 55 is in the passage position of the wire W forming the loop Ru. The retracted position is a position in which all or part of the movable guide unit 55 has entered the main body 10A. Furthermore, a configuration can be made in which the movable guide unit 55 is provided with a guide groove 55d extending in an oblique direction along the direction of contact with and separation from the first guide unit 50 and in the longitudinal direction. The guide groove 55d may have a straight shape or a curved shape, for example, an arc shape.

[0241] FIG. 42, 43A, 43B and 44 are views illustrating an example of a parallel guide in accordance with another embodiment, wherein FIG. 43A is a sectional view taken along line AA in FIG. 42, FIG. 43B is a sectional view taken along line B-B in FIG. 42, and FIG. 44 illustrates a modified example of a parallel guide in accordance with another embodiment. In addition to FIG. 45 is an explanatory view illustrating an example of a parallel guide in accordance with another embodiment.

[0242] The parallel guide 4G1 provided in the insertion position P1 and the parallel guide 4G2 provided in the intermediate position P2 are provided with a sliding member 40A that prevents wear due to sliding of the wire W when the wire W passes through the guide. The parallel guide 4G3 provided in the dispensing position P3 for cutting does not have a sliding member 40A.

[0243] The parallel guide 4G1 is an example of a restriction block forming a feed unit, and is formed by a hole (wire direction restriction unit) 40G1 extending along the wire feed direction W. To limit the radial direction orthogonal to the wire feed direction W, as illustrated in FIG. 43A and 44, the parallel guide 4G1 has an opening 40G1 having a shape in which the length L1 in one direction orthogonal to the wire feed direction W is greater than the length L2 in the other direction orthogonal to the wire feed direction W and the same direction.

[0244] To accommodate two wires W along the radial direction and limit the direction in which the two wires W are located, the parallel guide 4G1 is configured such that the length L1 of the hole 40G1 in the longitudinal direction orthogonal to the wire feed direction W is two times the diameter r of the wire W, and the length L2 in the transverse direction is slightly larger than the diameter r of one wire W. The parallel guide 4G1 is designed so that the longitudinal direction of the hole 40G1 is rectilinear, and the transverse direction is an arc th or straight.

[0245] The wire W, bent into an arc shape by the first guide block 50 of the bending guide block 5A, is bent so that the positions of the two outer points and one inner point of the arc are limited at three points: a parallel guide 4G2 provided in the intermediate position P2, and guide pins 53 and 53b of the first guide block 50, whereby a substantially circular loop Ru is formed.

[0246] If the axial direction Ru1 of the loop Ru illustrated in FIG. 45, which is formed by wire W, is taken as a reference, as indicated by the dot-and-dot line Deg (a line passing through the axis of the wires) with one point in FIG. 44, two wires W are fed when the inclination is in the direction in which the two wires W are passing through the hole 40G1 of the parallel guide 4G1 (the inclination of the direction in which the two wires W are located relative to the side (the side extending in the longitudinal direction L1 of FIG. 44 also corresponding to the direction Ru1), continuing in the axial direction Ru1 of the loop Ru, of the hole 40G1), exceeds 45 degrees, and therefore there is a possibility of twisting and crossing of the wires W with each other due to the supply of two wires.

[0247] Therefore, in the parallel guide 4G1, so that the inclination of the direction in which the two wires W passing through the hole 40G1 of the parallel guide 4G1 are 45 degrees or less relative to the axial direction Ru1 of the loop Ru formed by the wire W is determined the ratio of the length L2 in the transverse direction and the length L1 in the longitudinal direction of the hole 40G1. In this example, the ratio of the length L2 in the transverse direction and the length L1 in the longitudinal direction of the hole 40G1 is 1: 1.2 or more. Given the diameter r of the wire W, the length L2 in the transverse direction of the hole 40G1 of the parallel guide 4G1 exceeds 1 diameter r of the wire W and is 1.5 diameters or less. Note that the inclination of the direction in which the two wires W are located is more preferably 15 degrees or less.

[0248] The parallel guide 4G2 is an example of a restriction block forming a feed unit, and is formed by an opening (wire direction restriction unit) 40G2 extending along the wire feed direction W. As illustrated in FIG. 43B, a parallel guide 4G2 for limiting the direction of the wire W in the radial direction orthogonal to the feed direction is an opening 40G2 having a shape in which the length L1 in one direction orthogonal to the feed direction of wire W is greater than the length L2 in the other direction orthogonal to the feed direction wire W and one direction indicated.

[0249] To accommodate two wires W along the radial direction and limit the direction in which the two wires W are located, the parallel guide 4G2 is configured such that the length L1 of the hole 40G2 in the longitudinal direction orthogonal to the wire feed direction W is larger than the diameter r of the two wires W, and the length L2 in the transverse direction is slightly larger than the diameter r of one wire W. In addition, the parallel guide 4G2 is designed so that the longitudinal direction of the hole 40G2 is rectilinear, and the transverse direction is an arc shaped or straight.

[0250] Even in the parallel guide 4G2, the ratio of the length L2 in the transverse direction and the length L1 in the longitudinal direction of the hole 40G2 is 1: 1.2 or more, so that the inclination of the direction in which the two wires W are located is 45 degrees or less, preferably 15 degrees or less. Given the diameter r of the wire W, the length L2 in the transverse direction of the hole 40G2 parallel to the guide 4G2 is greater than 1 diameter r of the wire W and is 1.5 diameters or less.

[0251] The parallel guide 4G3 is an example of a restriction block forming the feed unit, and is a fixed blade portion 60. Like the parallel guide 4G1 and the parallel guide 4G2, the parallel guide 4G3 is an opening (wire direction limiting block) 40G3 having a shape in which the length in the longitudinal direction orthogonal to the wire feed direction W is two times larger than the diameter r of the wire W, and the length in the transverse direction is slightly larger than the diameter r of one wire W.

[0252] The parallel guide 4G3 has a ratio of 1: 1.2 or more between the length of at least one part in the transverse direction of the hole 40G3 and the length of at least one part in the longitudinal direction of the hole 40G3, so that the inclination of the direction in which the two wires are located W is 45 degrees or less, preferably 15 degrees or less. Given the diameter r of the wire W, the length in the transverse direction of the hole 40G3 of the parallel guide 4G3 is greater than 1 diameter r of the wire W and is 1.5 diameters or less, and the parallel guide 4G3 limits the direction in which the two wires W.

[0253] The slide member 40A is an example of a slip block. Slide member 40A is made of a material called cemented carbide. Cemented carbide has a higher hardness than the material from which the guide main body 41G1 is provided provided with the parallel guide 4G1, and the material from which the guide main body 41G2 is made provided with the parallel guide 4G2. As a result, the slide member 40A has a higher hardness than the guide rail main body 41G1 and the rail main body 41G2. In this example, the slide member 40A is formed by a member called a cylindrical pin.

[0254] The guide rail main body 41G1 and the rail main body 41G2 are made of iron. The hardness of the guide main body 41G1 and the guide main body 41G2 having undergone general heat treatment is about 500-800 Vickers hardness units. On the other hand, the hardness of the slide member 40A made of cemented carbide is about 1500-2000 Vickers hardness units.

[0255] In the slide member 40A, a portion of the peripheral surface is perpendicular to the wire feed direction W in the hole 40G1 of the parallel guide 4G1 and is open from the inner surface in the longitudinal direction along the direction in which the two wires W are located. In the slip member 40A, the portion of the peripheral surface is perpendicular to the wire feed direction W in the hole 40G2 parallel to the guide 4G2 and is open from the inner surface in the longitudinal direction along the direction in which the two wires are located W. Element The slide 40A is perpendicular to the wire feed direction W and runs along the direction in which the two wires W are located. It is sufficient that the slide member 40A has a portion of the peripheral surface open on the same surface where there is no level difference with the inner surface of the hole 40G1 parallel to the 4G1 longitudinal guide the direction and inner surface of the hole 40G2 parallel to the guide 4G2 in the longitudinal direction. Preferably, a portion of the peripheral surface of the slide member 40A protrudes from the inner surface in the longitudinal direction of the hole 40G1 of the parallel guide 4G1 and the longitudinal surface of the longitudinal surface of the hole 40G2 of the parallel guide 4G2 and is open.

[0256] The guide main body 41G1 is provided with an opening portion 42G1 having a diameter in which the slide member 40A is secured by pressing. The hole portion 42G1 is provided in a predetermined position in which a portion of the peripheral surface of the slide member 40A pressed into the hole portion 42G1 is open on the longitudinal inner surface of the hole 40G1 parallel to the guide 4G1. The hole portion 42G1 extends orthogonally to the wire feed direction W and along the direction in which the two wire W.

[0257] The guide main body 41G is provided with an opening portion 42G2 having a diameter in which the slide member 40A is secured by pressing. The hole portion 42G2 is provided in a predetermined position in which a portion of the peripheral surface of the slide member 40A pressed into the hole portion 42G2 is open on the inner surface of the hole 40G2 of the longitudinal longitudinal guide 4G2. The hole portion 42G2 extends orthogonally to the wire feed direction W and along the direction in which the two wires W.

[0258] A wire W from which a loop Ru is formed by the folding guide unit 5A, illustrated in FIG. 45, can move in the radial direction Ru2 of the loop Ru during the feed operation by the wire feed unit 3A. In the reinforcing bar strapping machine 1A, the direction in which the wire W is fed, bent into the loop by the bending guide unit 5A (the direction of pulling the wire W wrapped around the reinforcing bar S in the bending guide unit 5A), and the direction in which the wire W is wound around the coil 20 are oriented opposite. In this regard, the wire W can move in the radial direction Ru2 of the loop Ru during the feeding operation by the wire feeding unit 3A. The radial direction Ru2 of the Ru loop is one direction orthogonal to the direction of wire feed W and orthogonal to the direction in which the two wires W are located. As the diameter of the loop Ru increases, the wire W moves outward relative to the radial direction Ru2 of the loop Lo. As the diameter of the Ru loop decreases, the wire W moves inward relative to the radial direction Ru2 of the Ru loop.

[0259] The parallel guide 4G1 is configured such that a wire W pulled from the coil 20 illustrated in FIG. 1 or the like, passes through hole 40G1. For this reason, the wire W passing through the parallel guide 4G1 slides along the inner surface of the hole 40G1 corresponding to the external and internal positions with respect to the radial direction Ru2 of the loop Ru of the wire W illustrated in FIG. 45. When the outer surface and inner surface of the hole 40G1 wear out of the parallel guide 4G1 due to the sliding of the wire W, the wire W passing through the parallel guide 4G1 moves in the radial direction Ru2 of the loop Ru.

[0260] As a result, the wire W guided to the wire feed unit 3A moves from the space between the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R, and the direction of the wire to the wire feed unit 3A is difficult, as illustrated by FIG. 3.

[0261] In this regard, in the parallel guide 4G1, a sliding member 40A is provided in a predetermined position on the outer surface and the inner surface of the inner surface of the hole 40G1 with respect to the radial direction Ru2 of the loop Ru of the wire W formed by the folding guide block 5A. As a result, wear in the hole 40G1 is prevented, and the wire W passing through the parallel guide 4G1 can be reliably guided to the wire feed unit 3A.

[0262] In addition, since the wire W that is supplied from the wire feed unit 3A, and from which the bending guide unit 5A forms a loop Ru, passes through the parallel guide 4G2, the wire W slides mainly along the outer surface of the inner surface of the hole 40G2 with respect to the radial direction Ru2 of the Ru loop of the wire W formed by the folding guide block 5A. When the outer surface of the inner surface of the hole 40G1 wears out of the parallel guide 4G2 due to the sliding of the wire W, the wire W passing through the parallel guide 4G2 moves outward in the radial direction Ru2 of the loop Ru. As a result, the direction of the wire W to the parallel guide 4G3 is difficult.

[0263] In this regard, the parallel guide 4G2 is provided with a sliding member 40A at a predetermined position on the outer surface of the inner surface of the hole 40G2 relative to the radial direction Ru2 of the loop Ru from the wire W formed by the bending guide block 5A. As a result, wear in a predetermined position affecting the direction of the wire W to the parallel guide 4G3 is prevented, and the wire W passing through the parallel guide 4G2 can be reliably guided to the parallel guide 4G3.

[0264] If the slide member 40A has the same surface shape without level difference as the inner surface of the hole 40G1 of the parallel guide 4G1 and the inner surface of the hole 40G2 of the parallel guide 4G2, it is considered that the inner surface of the hole 40G1 of the parallel guide 4G1 and the inner surface of the hole 40G2 parallel 4G2 guide may wear out a bit. However, the slide member 40A does not wear out, and remains as it was, and protrudes from the inner surface of the hole 40G1 and the inner surface of the hole 40G2 and is open. As a result, further wear of the inner surface of the hole 40G1 of the parallel guide 4G1 and the inner surface of the hole 40G2 of the parallel guide 4G2 is prevented.

[0265] FIG. 46 is a diagram illustrating a modified example of a parallel guide in accordance with another embodiment. As illustrated in FIG. 1, the direction of winding the wire W to the coil 20 is different from the direction of winding the loop Ru of the wire W formed by the bending guide unit 5A. In this regard, in the parallel guide 4G1, the sliding member 40A can be provided in a predetermined position only on the inner surface of the inner surface of the hole 40G1 with respect to the radial direction Ru2 of the loop Ru from the wire W formed by the bending guide block 5A.

[0266] FIG. 47-51 are diagrams illustrating modified examples of a parallel guide in accordance with another embodiment. As illustrated in FIG. 47, the slide block is not limited to the above pin-shaped slide element 40A having a circular cross section, and may be a slide element 40B having a polygonal cross section, for example, having the shape of a rectangular box, a cubic shape, or the like.

[0267] In addition, as illustrated in FIG. 48, the predetermined positions of the inner surface of the hole 40G1 of the parallel guide 4G1 and the inner surface of the hole 40G2 of the parallel guide 4G2 can be further strengthened by quenching or the like, in contrast to other positions, thereby forming a sliding block 40C. In addition, the guide main body 41G1 forming the parallel guide 4G1 and the guide main body 41G2 forming the parallel guide 4G2 may be made of a material having a higher hardness than the parallel guide 4G3 or the like, and as illustrated in FIG. 49, the parallel guide 4G1 and the parallel guide 4G2 may be the entire sliding block 40D.

[0268] In addition, as illustrated in FIG. 50, instead of a sliding block, a roller 40E having a shaft 43 orthogonal to the wire feed direction W and rotated due to the wire feed W can be provided. The roller 40E rotates with the wire feed W and the contact point with the wire W changes so that wear is prevented.

[0269] Furthermore, as illustrated in FIG. 51, the parallel guide 4G1 and the parallel guide 4G2 are provided with hole portions 401Z into which screws 400 are inserted as an example of removable elements. In addition, the reinforcing bar strapping machine 1A illustrated in FIG. 1 or the like includes a mounting base 403 having a screw hole 402 into which a screw 400 is screwed. The parallel guide 4G1 and the parallel guide 4G2 are detachable by locking and releasing the fixation by inserting and removing the screw 400. Thus, even when the parallel guide 4G1 and parallel guide 4G2 wear out, replacement is possible.

[0270] FIG. 52 is a diagram illustrating a modified example of a parallel guide in accordance with another embodiment. The parallel guide 4H1 provided in the insertion position P1 is provided with two hole portions (holes) corresponding to the number of wires W and limits the direction in which the wires W are parallel to each other in the direction of the location of the hole portions. The parallel guide 4H1 may include any of the slide member 40A, illustrated in FIG. 42, 43A, 43B, 44, and 46 of the slide member 40B illustrated in FIG. 47 of the slide block 40C illustrated in FIG. 48 of the slide block 40D illustrated in FIG. 49, or the roller 40E illustrated in FIG. fifty.

[0271] The parallel guide 4H2 provided in the intermediate position P2 corresponds to any of the parallel guide 4A illustrated in FIG. 4A and the like parallel to the guide 4B illustrated in FIG. 37A parallel to the guide 4C illustrated in FIG. 37B parallel to the guide 4D illustrated in FIG. 37C, or the parallel guide 4E illustrated in FIG. 37D.

[0272] Furthermore, the parallel guide 4H2 may be a parallel guide 4G2 having the slide member 40A illustrated in FIG. 42, 43A, 43B, 44, and 46 as an example of a slip block. Furthermore, the parallel guide 4H2 can be any of the parallel guide 4G2 having the slide member 40B illustrated in FIG. 47 as a modified example of a slide block parallel to the guide 4G2 having a slide block 40C illustrated in FIG. 48 parallel to the guide 4G2 having the slide block 40D illustrated in FIG. 49, or a parallel guide 4G2 having a roller 40E illustrated in FIG. fifty.

[0273] The parallel guide 4H3 provided in the cutting position P3 is any of the parallel guide 4A illustrated in FIG. 4A and the like parallel to the guide 4B illustrated in FIG. 37A parallel to the guide 4C illustrated in FIG. 37B parallel to the guide 4D illustrated in FIG. 37C, or the parallel guide 4E illustrated in FIG. 37D.

[0274] FIG. 53 is a diagram illustrating a modified example of a parallel guide in accordance with another embodiment. The parallel guide 4J1 provided in the insertion position P1 is any of the parallel guide 4A illustrated in FIG. 4A and the like parallel to the guide 4B illustrated in FIG. 37A parallel to the guide 4C illustrated in FIG. 37B parallel to the guide 4D illustrated in FIG. 37C, or the parallel guide 4E illustrated in FIG. 37D.

[0275] Furthermore, the parallel guide 4J1 may be a parallel guide 4G2 having a slide member 40A illustrated in FIG. 42, 43A, 43B, 44, and 46 as an example of a slip block. Furthermore, the parallel guide 4J1 may be any of the parallel guide 4G2 having the slide member 40B illustrated in FIG. 47 as a modified example of a slide block parallel to the guide 4G2 having a slide block 40C illustrated in FIG. 48 parallel to the guide 4G2 having the slide block 40D illustrated in FIG. 49, or a parallel guide 4G2 having a roller 40E illustrated in FIG. fifty.

[0276] The parallel guide 4J2 provided in the intermediate position P2 is formed by two hole portions corresponding to the number of wires W, and limits the direction in which the wires W are parallel to each other in the direction of the parallel guide 4J2. The parallel guide 4J2 may include any of the slide member 40A illustrated in FIG. 42, 43A, 43B, 44, and 46, of the slide member 40B illustrated in FIG. 47 of the slide block 40C illustrated in FIG. 48 of the slide block 40D illustrated in FIG. 49, or the roller 40E illustrated in FIG. fifty.

[0277] The parallel guide 4J3 provided in the cutting position P3 may be any of the parallel guide 4A illustrated in FIG. 4A and the like parallel to the guide 4B illustrated in FIG. 37A parallel to the guide 4C illustrated in FIG. 37B parallel to the guide 4D illustrated in FIG. 37C, or the parallel guide 4E illustrated in FIG. 37D.

[0278] FIG. 54-59 are explanatory views illustrating configurations and operations of the clamping portion in accordance with another embodiment, and description will be given with respect to another embodiment of the bending direction of one end of WS wire W.

[0279] The wire W, bent into an arc shape by the first guide block 50 of the bending guide block 5A, is wound so that the positions of the two outer points and one inner point of the arc are limited at three points: a fixed blade portion 60 forming a parallel guide 4A in the issuing position P3 for cutting, and the guide pins 53 and 53b of the first guide block 50, whereby a substantially circular loop Ru is formed.

[0280] During the wire feed operation W in the reverse direction by the wire feed unit 3A for wrapping it around the reinforcing bar S, the wire W moves in the direction of decreasing the diameter of the loop Ru.

[0281] In the configuration described above, as illustrated in FIG. 35A, the end WS of the wire W is folded outwardly pre-bending portion 72, opposite the wire W extending between the fixed clamping member 70C and the second movable clamping member 70R. As a result, the end WS of the wire W is diverted from the movement path of the wire W based on the operation of winding the wire W around the reinforcing bar S. In the embodiment illustrated in FIG. 54 and 55, when the end WS of the wire W is bent outward, opposite to the wire W extending between the fixed clamping member 70C and the second movable clamping member 70R, the wire is bent inward in the radial direction of the loop Ru formed by the wire W. In the embodiment illustrated in FIG. 56 and 57, when the end WS of the wire W is bent outward, opposite to the wire W passing between the fixed clamping member 70C and the second movable clamping member 70R, the wire is bent inward in the radial direction of the loop Ru formed by the wire W. For this reason, the clamping portion 70 is provided with a portion 72a pre-bending, which bends the wire W in a predetermined direction in which the end WS of the wire W is retracted from the path W3 of moving the wire W along which the wire W moves in the direction in which the diameter n decreases ли ли Ru Ru Ru пров wire W wrapped around reinforcing bar S.

[0282] In FIG. 54 and 55, a pre-bending portion 72a is provided on the surface of the fixed clamping member 70C, which faces the first movable clamping member 70L, and protrudes in the direction of bending the wire W inward relative to the radial direction of the loop Ru formed by the wire W, and the direction Ru2 along the direction orthogonal to wire feed W parallel guide 4A.

[0283] Thus, during the clamping operation of the wire W by the first movable clamping member 70L and the stationary clamping member 70C, the end WS of the wire W bends inward relative to the radial direction of the loop Ru formed by the wire W and the direction Ru2 along the direction orthogonal to the feed direction of the wire W parallel guide 4A. In addition, as illustrated in FIG. 35A, the end WS of the wire W may be bent outward, opposite to the wire W extending between the fixed clamping member 70C and the second movable clamping member 70R, with respect to the axial direction Ru1 of the loop Ru formed by the wire W.

[0284] In this regard, the end WS of the wire W passing between the first movable clamping element 70L and the stationary clamping element 70C does not interfere with the wire W passing between the stationary clamping element 70C and the second movable clamping element 70R during the operation of wrapping the wire W around the reinforcing bar S, and thus the engagement of the end WS of the wire W by the wire W is prevented.

[0285] In FIG. 56 and 57, a pre-bending portion 72a is provided on the surface of the fixed clamping member 70C, which faces the first movable clamping member 70L, and protrudes in the bending direction of the wire W outward relative to the radial direction of the loop Ru formed by the wire W, and the direction Ru2 along the direction orthogonal to wire feed W parallel guide 4A.

[0286] Thus, during the operation of clamping the wire W by the first movable clamping member 70L and the stationary clamping member 70C, the end WS of the wire W bends inward with respect to the radial direction of the loop Ru formed by the wire W and the direction Ru2 along the direction orthogonal to the feed direction of the wire W parallel guide 4A. In addition, as illustrated in FIG. 35A, the end WS of the wire W may be bent outward, opposite to the wire W extending between the fixed clamping member 70C and the second movable clamping member 70R, with respect to the axial direction Ru1 of the loop Ru formed by the wire W.

[0287] In this regard, the end WS of the wire W passing between the first movable clamping element 70L and the stationary clamping element 70C does not interfere with the wire W passing between the stationary clamping element 70C and the second movable clamping element 70R during the operation of wrapping the wire W around the reinforcing bar S, and thus, the engagement of the end WS of the wire W by the wire W is prevented.

[0288] In the embodiment illustrated in FIG. 54-57, if the end WS of the wire W can be diverted from the path of moving the wire W during the operation of winding the wire W around the reinforcing bar S, the end WS of the wire W can be bent in the direction of the wire W extending between the fixed clamping member 70C and the second movable clamping element 70R. In FIG. 58 and 59, the length limiting portion 74 is formed so that the end WS of the wire W is directed outward relative to the radial direction of the loop Ru formed by the wire W and the direction Ru2 along the direction orthogonal to the feed direction of the wire W parallel to the guide 4A, and limits the position of one end WS of the wire W , and is provided in the first guide block 50 of the folding guide block 5A.

[0289] Thus, when feeding the wire and colliding the end WS of the wire W with the length limiting portion 74, the end WS of the wire W goes outward with respect to the radial direction of the loop Ru formed by the wire W and the direction Ru2 along the direction orthogonal to the wire feed direction W of the parallel guide 4A .

[0290] In this regard, since the end WS of the wire W extending between the first movable clamping element 70L and the stationary clamping element 70C has a shape capable of bending in the direction of the wire W extending between the stationary clamping element 70C and the second movable clamping element 70R, in the axial direction Ru1 of the loop Ru formed by the wire W, without interacting with it, the end of the WS wire W is prevented from being caught by the wire W during the operation of winding the wire W around the reinforcing bar S.

[0291] FIG. 60 is a view illustrating an example of a second guide block in accordance with another embodiment. The second guide block 51B includes a main guide block 54B serving as a third guide block to limit the radial position of the loop Ru2 formed by the wire W supplied from the first guide block 50, and a movable guide block 55 serving as the fourth guide block for limiting position along the axial direction Ru1 of the loop Ru.

[0292] The main guide block 54B limits the position of the radial direction Ru2 of the loop Ru formed by the wire W to the wall surface 54a provided outside the radial direction Ru2 of the loop Lo formed by the wire W.

[0293] The movable guide block 55 includes a wall surface 55a that is provided at the distal end of the second guide block 51B, and a wall surface 55a is formed on both sides along the axial direction Ru1 of the loop Ru formed by the wire W transmitted from the first guide block 50. Thus, the axial direction Ru1 of the loop Ru formed by the wire W is limited by the wall surface 55a of the movable guide unit 55, and the wire W is guided to the main guide block 54B by the movable guide conductive block 55.

[0294] The movable guide block 55 is supported on the main guide block 54B by a shaft 55b rotating along the axial direction Ru1 of the loop Ru formed by the wire W. By rotating around the shaft 55b as the center of rotation, as indicated by arrows H1 and H2, the movable guide block 55 opens and closes between a guide position in which the wire transmitted from the first guide block 50 can be guided to the second guide block 51B and a retracted position in which the reinforcing steel strapping machine 1A bo ttom assigned by removing from the reinforcing bar S.

[0295] The movable guide unit 55 is biased in the direction indicated by arrow H2, to reduce the distance between the far end side of the first guide unit 50 and the far end side of the second guide unit 51B by the biasing portion, for example, a torsion coil spring 57, and is held in the guide position illustrated in FIG. 36A by the force of the torsion coil spring 57. In addition, when pushing the movable guide block 55 to the reinforcing bar S during the retraction operation of the machine 1A for strapping the reinforcing bars from the reinforcing bar S, the movable guide block 55 is rotated in the direction indicated by arrow H1 and opens from the guide the retracted position illustrated in FIG. 36B.

[0296] The second guide block 51B includes a retraction mechanism (rotation mechanism) 54C by which the main guide block 54B is biased and retracted in the direction of separation from the first guide block 50. The retraction mechanism 54C includes a shaft 58 that supports the main guide block 54B, and a spring 59 that holds the main guide unit 54B in a predetermined guide position.

[0297] The main guide block 54B is biased in the direction indicated by arrows Q1 and Q2 by a rotation operation around the shaft 58 as a center of rotation. Spring 59 is an example of a bias section (bias section) and is made, for example, in the form of a torsion coil spring. The spring 59 has a greater spring load than the torsion coil spring 57. The main guide block 54B is held in the guide position illustrated in FIG. 60, spring 59.

[0298] FIG. 61-64 are explanatory views illustrating an example of the operation of the second guide block in accordance with another embodiment. The wire W, bent into an arc shape, is wrapped by the first guide block 50 of the bending guide block 5A so that the positions of the two external points and one internal point of the arc are limited at three points: a fixed blade section 60 forming a parallel guide 4G3 in the position P3 of the issuance for cutting and the guide pins 53 and 53b of the first guide block 50, whereby a substantially circular loop Ru is formed.

[0299] Thus, as illustrated in FIG. 61, the distal end of the wire W enters the movable guide block 55, the axial position Ru1 of the loop Ru formed by the wire W is limited to the wall surface 55a of the movable guide block 55, and the wire W is guided to the main guide block 54B by the movable guide block 55.

[0300] When supplying the wire W by the wire feeding unit 3A, as illustrated in FIG. 62, the wire W is guided to the main guide block 54B by the movable guide block 55. Even when the loop Ru formed by the wire W extends outward in the radial direction Ru2 and the wire W contacts the main guide block 54B, the main guide block 54B is held stationary by the spring force 59 in the guide position.

[0301] In further feeding the wire W, as illustrated in FIG. 63, the distal end of the wire W abuts against a length limiting portion 74. When the predetermined amount of wire W is further supplied until the wire W is cut off, as illustrated in FIG. 64, the position of the distal end of the wire W is limited by the length limit portion 74, and thus, the loop Ru formed by the wire W extends outward in the radial direction Ru2, while the distal end of the wire W moves forward along the length limit portion 74. However, the main guide unit 54B is held stationary by the force of the spring 59 in the guide position.

[0302] As described above, during the operation of forming the loop Ru from the wire W transmitted from the first guide block 50, even when the wire W abuts against the main guide block 54B, the main guide block 54B is held stationary in the guide position.

[0303] Furthermore, even in the case where the movable guide unit 55 is pushed towards the reinforcing bar S during the retraction operation of the machine 1A for strapping the reinforcing bars from the reinforcing bar S, and therefore, the movable guide block 55 is opened from the guide position to the retracted position , the main guide unit 54B is held stationary in the guide position.

[0304] However, in the case of applying an unexpected external force, the main guide unit 54B rotates in the direction indicated by the arrow Q1 around the shaft 58 as a center of rotation against the biasing force of the spring 59, and is therefore freed from external force. When released from external force, the main guide unit 54B is pushed by the spring 59 to rotate in the direction indicated by arrow Q2, and returns to the guide position.

[0305] Thus, by providing the retraction mechanism 54C in the main guide block 54B, it is possible to reduce the load in the case of applying an external force or the like, without preventing the formation of a loop Ru from the wire W wrapped around the reinforcing bar S. In particular, since the shaft 55b of the movable guide block 55 and the shaft 58 of the main guide block 54B are parallel to each other, the main guide block 54B can be diverted by applying a large external force to the movable guide block 55, for example, the force on the movable guide guide 55.

[0306] In a configuration in which the movable guide unit 55 is opened in the direction of arrow H1 by hand force, and the main guide unit 54B can be opened in the direction of arrow H1, the range of movement of the second guide unit 51B can be increased. This facilitates the maintenance or removal of jammed wire or the like. The main guide unit 54B may be retracted by linear movement described with reference to FIG. 41A and 41B.

[0307] FIG. 65-67 are views illustrating an example of an offset unit in accordance with another embodiment, and FIG. 68 is an external view illustrating an example of a reinforcing bar strapping machine according to another embodiment. The bias unit 340 is an example of a bias unit and includes a first bias element 350 that biases in the directions indicated by arrows V1 and V2 by a rotation operation with the shaft 350a as a center of rotation, and biases the second feed gear 30R in the direction of separation from the first feed gear 30L. In addition, the biasing unit 340 includes a second biasing member 360 for biasing the first biasing member 350.

[0308] The first biasing member 350 is a long plate member and has one end side rotatably supported on the shaft 350a and another end side on which the second feed gear 30R is rotatably supported by the shaft 300R. It should be noted that the shape of the first biasing element 350 is not limited to a long plate element. In addition, the first biasing member 350 includes a pushed portion 350b pushed from the second biasing member 360 in a thickness range t along the axial direction of the second feeding gear 30R supported by the shaft 300R, preferably near the position of the second feeding groove 32R.

[0309] The pushed portion 350b is positioned so as to extend in the radial direction of the second feed gear 30R from the shaft 300R. The pushed portion 350b is U-shaped and attached to the shaft 300R so that the second feed gear 30R extends into the U-shaped hole. It should be noted that the shape of the pushed portion 350b is not limited to the U-shape.

[0310] The second biasing member 360 is rotatably supported on the shaft 360a and is displaced in the directions indicated by arrows W1 and W2 by a rotation operation with the shaft 360a as the center of rotation. The second biasing member 360 includes a thrust portion 360b that pushes the thrust portion 350b of the first biasing member 350 on one end side relative to the shaft 360a. The pushing portion 360b pushes the pushing portion 350b in the thickness range t along the axial direction of the second feed gear 30R, preferably near the position of the second feed groove 32R.

[0311] The first biasing member 350 is biased by the rotation operation with the shaft 350a as the center of rotation, and the second biasing member 360 is biased by the rotation operation with the shaft 360a as the center of rotation, but their shafts are not parallel to each other. The pushing portion 360b is formed by a convex arc along the direction of rotation with the shaft 360a as the center of rotation. In addition, the pushed portion 350b is formed by a convex arc along the direction of rotation with the shaft 300R as the center of rotation. As a result, a substantial deviation of the contact points between the pushing portion 360b and the pushing portion 350b during rotation of the first biasing member 350 and the second biasing member 360 is prevented.

[0312] Moreover, in the case of the first biasing member 350, at least the pushing portion 350b or the entire member is made of iron, and in the case of the second biasing member 360, at least the pushing portion 360b or the entire member is made of iron. As a result, abrasion of the contact point between the push portion 360b and the push portion 350b is prevented.

[0313] The second biasing member 360 includes a spring stop portion 370a against which a spring 370 formed by a compression screw spring abuts, for example, on the other end side relative to the shaft 360a. The spring 370 is biased in the push direction of the spring stop portion 370a. In this regard, one end side of the second biasing member 360, i.e., the pushing portion 360b, enters the pushing state of the pushing portion 350b under the action of the biasing force of the spring 370.

[0314] A spring 370 pushes the second biasing member 360, and the pushing portion 360b of the second biasing member 360 pushes the pushed portion 350b of the first biasing member 350 so that the second feed gear 30R is pushed in the direction of the first feed gear 30L.

[0315] As a result, the two wires W are clamped by the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R. In addition, the tooth portion 31L of the first feed gear 30L and the tooth portion 31R of the second feed gear 30R engage with each other.

[0316] The biasing unit 340 includes an operation button 380 for pushing the second biasing member 360 against the biasing force of the spring 370. In addition, the biasing unit 340 includes a release lever 390 for locking the operation button 380 in a predetermined state, i.e., in a state in which the operation button 380 pushes the second biasing element 360, and to release the lock.

[0317] The operating button 380 is an example of the operating element and is provided in a position facing the spring 370 through the second biasing element 360. In the operating button 380, the operating part 380b protrudes outward from one side surface of the main body 10A and is supported on the main body 10A with the possibility movement in the direction of depression relative to the main body 10A, indicated by arrow T1, and in the direction of protrusion from the main body 10A, indicated by arrow T2. The working portion 380b of the operating button 380 is pressed in the direction of the arrow T1, in which the main body 10A is pressed, so that the operating button 380 and the second biasing member 360, by which the spring 370 is pressed, move in the direction of the arrow T1.

[0318] The operation button 380 includes a locking recess 380a in which the release lever 390 is locked in the wire loading position, in which the wire W can be loaded by separating the first feed gear 30L and the second feed gear 30R. In the present example, the locking recess 380a is made by providing a recess on the front side of the operating button 380, which faces the release lever 390.

[0319] The release lever 390 is an example of a release member and is movably supported in the directions indicated by arrows U1 and U2 intersecting the movement direction of the operation button 380 by a rotation operation with the shaft 390c as the center of rotation.

[0320] The release lever 390 includes a locking protrusion 390a engaged with a locking recess 380a formed in the operation button 380 when the operation button 380 is pressed into a predetermined state. Accordingly, when the operation button 380 is pressed into a predetermined state, the operation button 380 is locked in a certain position by the release lever 390. The release lever 390 includes a working part 390d for releasing a latch. The working portion 390d protrudes outward from one side surface of the main body 10A. The release lever 390 controls the operating portion 390d to move in a direction of separation from the operating button 380, so that the locking protrusion 390a is released from the locking recess 380a.

[0321] The release lever 390, for example, is biased in the direction of arrow U1 to the operating button 380 by a spring 390b formed by a torsion coil spring, so that the locking protrusion 390a abuts against the operating button 380.

[0322] FIG. 69-71 are explanatory views illustrating an example of the operation of the displacement unit in accordance with another embodiment, and illustrate the operation of releasing the pressing of the second feed gear 30R. When the operation button 380 is pressed in the direction of the arrow T1, the second biasing member 360 rotates in the direction of the arrow W1 with the shaft 360a as the center of rotation, compressing the spring 370. As a result, the pushing portion 360b of the second biasing member 360 is separated from the pushed portion 350b of the first biasing member 350.

[0323] When the operating button 380 is pressed in the direction of the arrow T1 to the position where the locking recess 380a is facing the locking protrusion 390a of the release lever 390, the release lever 390 is rotated by the return force of the spring 390b in the direction of the arrow U1 with the shaft 390c as the center of rotation spring 390b. As a result, the locking protrusion 390a of the release lever 390 enters the first locking recess 380a of the operating button 380, so that the operating button 380 is held in a pressed state of the second biasing member 360. Thus, it is not necessary to continuously press the operating button 380 while the wire W is loading.

[0324] FIG. 72-74 are explanatory views illustrating an example of the operation of the offset unit in accordance with another embodiment, and illustrate the operation of loading wire W between the first feed gear 30L and the second feed gear 30R. In a state in which the thrust portion 360b of the second biasing member 360 is separated from the thrust portion 350b of the first biasing member 350, the first biasing member 350 for supporting the second feed gear 30R can rotate freely with the shaft 350a as a center of rotation.

[0325] As a result, when two wires W arranged in parallel are inserted between the first feed gear 30L and the second feed gear 30R, the first biasing member 350 rotates in the direction of the arrow V1 with the shaft 350a as the center of rotation, so that the second feed gear 30R is separated from the first feed gear 30L. Thus, two wires W arranged in parallel are inserted between the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R.

[0326] FIG. 75-77 are explanatory views illustrating an example of the operation of the biasing unit according to another embodiment, and illustrate the release operation of holding the operation button 380. After inserting the wire W between the first feed gear 30L and the second feed gear 30R, the release lever 390 is rotated in the direction of the arrow U2 with shaft 390c as the center of rotation. As a result, the locking protrusion 390a of the release lever 390 exits from the first locking recess 380a of the operation button 380.

[0327] FIG. 78-80 are explanatory views illustrating an example of the operation of the displacement unit in accordance with another embodiment, and illustrate the operation of pressing the second feed gear 30R to the first feed gear 30L. When the locking protrusion 390a of the release lever 390 is removed from the fixing button 380a of the operation button 380 by controlling the release lever 390, the second biasing member 360 is rotated by the return force of the spring 370 in the direction of the arrow W2 with the shaft 360a as the center of rotation.

[0328] When the second biasing member 360 rotates in the direction of the arrow W2, the pushing portion 360b of the second biasing member 360 pushes the pushed portion 350b of the first biasing member 350, so that the first biasing member 350 rotates in the direction of the arrow V2 with the shaft 350a as the center of rotation, and the second the feed gear 30R is pushed in the direction of the first feed gear 30L by a spring force 370.

[0329] As a result, in a state in which the two wires W are arranged in parallel, the two wires W are gripped by the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R. The tooth portion 31L of the first feed gear 30L and the tooth portion 31R of the second feed gear 30R engage with each other.

[0330] Moreover, the second biasing member 360 rotates in the direction of the arrow W2, so that the operation button 380 moves in the direction of the arrow T2.

[0331] The pushed portion 350b of the first biasing member 350 is pushed by the thrust portion 360b of the second biasing member 360, so that a pressing force close to the position of the second feeding groove 32R is transmitted through the shaft 300R, and the second feeding gear 30R is pressed in the direction of the first feeding gear 30L.

[0332] As a result, the inclination of the second feed gear 30R with respect to the first feed gear 30L is prevented, so that the transmission of the biased load to the first feed gear 30L and the second feed gear 30R is prevented.

[0333] Thus, biased abrasion of the first feed gear 30L and the second feed gear 30R is prevented. In addition, the pulling of the wire W from the first feed groove 32L of the first feed gear 30L and the second feed groove 32R of the second feed gear 30R is prevented.

[0334] FIG. 81 is an external view illustrating an example of a reinforcing bar strapping machine according to another embodiment. The working portion 380b of the operating button 380 and the working portion 390d of the release lever 390 are provided above the magazine 2A on one side surface of the main body 10A and the front side of the trigger 12A. A finger stop 16 for finger rest is provided above the magazine 2A on the other side surface of the main body 10A and the front side of the trigger 12A.

[0335] As a result, while holding the handle portion 11A with one hand, it is possible to control the working part 380b of the working button 380 with one hand, clamping the working part 380b of the working button 380 and the finger stop 16. In addition, you can control the working part 390d of the release lever 390 with one hand, clamping the working part 390d of the release lever 390 and the finger stop 16. Thus, it is possible to control the operating button 380 and the release lever 390 without installing the machine 1A for strapping the reinforcing bars in the workplace, etc.

[0336] It should be noted that since it is sufficient to provide a mechanism that can be fixedly held and released between the operating button 380 and the release lever 390, a locking element mechanism in the form of a locking protrusion on the side of the operating button 380 and in the form of a locking recess on the side can be provided lever 390 release.

[0337] In another modified example of the present embodiment, instead of the configuration of simultaneously supplying multiple wires W, a configuration can be made in which, after winding the wires W around the reinforcing bar S one after the other to wind the multiple wires, the multiple wires are fed back and drawn around rebar S.

[0338] Note that the present invention can also be applied to a strapping machine that wires a pipe or the like. as a binding object.

[0339] Next, another embodiment of the strapping machine will be described. FIG. 82-103 are intended to explain another embodiment.

Configuration

[0340] Next, a configuration will be described.

[0341] For example, as illustrated in side view in FIG. 82 and in a front view in FIG. 83, the reinforcing bar strapping machine 1B (strapping machine) is used to strand an object (strapping object) (hereinafter referred to as reinforcing bar S), for example, a reinforcing bar with wire at a construction site. This reinforcing bar tying machine 1B allows the reinforcing bar S to be tied by bending the wire W (or giving an arcuate bend) and feeding to form a loop Ru surrounding the periphery of the reinforcing bar S and tighten the loop Ru.

[0342] Next, a reinforcing bar strapping machine 1B will be described.

[0343] The above reinforcing bar strapping machine 1B has a main body (main strapping machine body) 10B and a handle portion 11B.

[0344] In addition, in the following description, when describing a direction, it is based on the state illustrated in FIG. 82 (state in which the reinforcing bar strapping machine 1B is raised). Also, the longitudinal direction (the direction corresponding to the left-right direction in Fig. 82) of the main body 10B is set as the front-back direction, a predetermined direction from the directions orthogonal to the longitudinal direction of the main body 10B (the direction corresponding to the up-down direction in Fig. 82 ) is set as the up-down direction (or the height direction), and the direction orthogonal to the front-back direction and the up-down direction is the left-right direction (or the width direction other). In addition, one end side in the longitudinal direction of the main body 1B is called the front side or the far end side, the other end side in the longitudinal direction of the main body 10B (the side opposite the reinforcing bar S, that is, the right side in Fig. 82) is called the back side or rear end side. In addition, the upper side in FIG. 82 is called the upper side relative to the main body 10B, and the lower side in FIG. 82 (the direction in which the grip portion 11B continues) is set as the lower side with respect to the main body 10B. In addition, the inner side of the sheet surface (left side in FIG. 83) in FIG. 82 is mounted as the right side of the main body 10B, and the front side of the sheet surface (right side in FIG. 83) in FIG. 82 is installed as the left side of the main body 10B.

[0345] The handle portion 11B is provided to extend from a substantially middle portion in the longitudinal direction of the main body 10B in a substantially downward direction. The handle portion 11B is provided with a trigger 12B and an interlock switch 800, and at the same time is configured to attach / disconnect the battery pack 15B to its lower portion. In addition, when the lock switch 800 is released and the trigger 12B is brought into a state in which the power switch is turned on, the reinforcing bar strapping machine 1B is activated and the strapping operation is performed.

[0346] In addition, an accommodating unit (magazine) 110 is provided on the front side of the handle portion 11B to be used to mount the coil 120 onto which the wire (strapping wire) W is wound to tie the reinforcing bar S. In this case, wire is used with respect to the coil 120 W in the shape of a coil. Coil 120 is configured to simultaneously pull one or more wires W. Coil 120, on which wire W is wound, is detachably mounted relative to enclosing unit 110. In this case, the attachment / detachment direction of coil 120 relative to enclosing unit 110 is the axial direction of coil 120 .

[0347] Furthermore, as illustrated in the internal structure of FIG. 84, the main body 10B is provided with a wire feed unit 160 for feeding the wire W wound on the coil 120 to the strapping unit 150 provided on the far end side of the main body 10B. In this case, the wire feed unit 160 is provided in the lower portion of the distal end side of the main body 10B. In addition, an accommodating unit 110 is provided in a lower portion of the wire feed unit 160. The accommodating unit 110 is mounted between the distal end of the main body 10B and the lower end of the handle portion 11B in the assembled state.

[0348] The host unit 110 is optionally mounted on the main body 10B in an assembled state. For example, if the wire W can be supplied to the main body 10B from the enclosing unit 110, the enclosing unit 110 can be made separately from the main body 10B.

[0349] As described above, by providing the wire feed unit 160 and the accommodating unit 110 in a lower portion of the front side of the main body 10B (for example, compared with the case where the accommodating unit 110 is provided on the rear end side of the main body 10B), the weight balance of the machine is improved 1B for tying reinforcing bars, the maintenance of the machine 1B for tying reinforcing bars is simplified, and the wire path W becomes more curved, so that the loop Ru of the wire W is formed easier.

[0350] As illustrated in the views of FIG. 85 and 86, the wire feed unit 160 includes at least a pair of feed gears (feed members) 170 for feeding the wire W and a feed motor 180 for rotating one of the pair of feed gears 170. The feed gear 170 is provided in pairs, for example, thus that the wires W are placed between the right and left sides. In a pair of left and right feed gears 170, one side is set as a drive wheel and the other side is set as a driven wheel. The feed gear 170, which is mounted as a driven wheel, may be a tension roller or the like, configured to repel a short distance from the feed gear 170 mounted as a drive wheel using the required clamping force.

[0351] A V-shaped feed mechanism 190 (toothed portion) for receiving and frictionally moving the wire W is provided in the central portion in the thickness direction of the outer periphery of the feed gear 170, and an engaging groove extending in the circumferential direction is formed. In addition, if necessary, an intermediate gear 210 or the like can be provided between the feed gear 170 and the output gear mounted on the output shaft of the feed motor 180.

[0352] Also, by directly rotating the feed gear 170 by the feed motor 180, the wire W can be moved substantially upward and fed to the strapping unit 150. In addition, the feed motor 180 changes the direction of rotation of the feed gear 170, so that the feed wire W can move substantially downwardly and retracted into the enclosing unit 110 from the strapping unit 150. In this case, as illustrated in FIG. 84, the rotary shaft 220 of the feed gear 170 is tilted to a forward inclined state with respect to the horizontal direction, and the wire W is fed substantially in a forward inclined direction.

[0353] In addition, the strapping unit 150 is provided with an abutting portion 250 that can contact the reinforcing bar S. In addition, the strapping unit 150 is provided with a folding guide block (curve forming portion) 5A for bending the wire W supplied by the wire feeding unit 160 to the loop Ru. The folding guide block 5A is provided with a first guide block 50 and a second guide block 51, which are vertically paired with the stop portion 250 located between them.

[0354] The first guide block 50 has a bending groove portion (guide groove) for bending the wire W (or for giving the wire W an arcuate curvature) on its inner peripheral side. The second guide block 51 has a receiving groove for receiving a wire W bent by the first guide block 50 on its inner peripheral side. In addition, the wire W passes through the first guide block 50 and the second guide block 51 in a counterclockwise direction in the drawings, thereby forming a loop Ru. In addition, a passage section (gap) is formed between the first guide block 50 and the second guide block 51, and the reinforcing bar S extends in the direction of the stop portion 250 through the passage section.

[0355] Furthermore, as illustrated in FIG. 85, the main body 10B is provided with parallel guides (wire guides) 310, 320 and 330 for guiding or limiting the position of the wire W from the input side and the output side of the wire feed unit 160 and at least the main portion of the first guide unit 50, respectively. Parallel guides 310, 320, and 330 form a feed unit. Of these, a parallel guide 310 located on the input side of the wire feed unit 160 is used to guide the wire W from the coil 120 to the wire feed unit 160. A parallel guide 320 located on the output side of the wire feed unit 160 is used to guide the wire W from the wire feed unit 160 to the cutting unit 340Z. The cutting unit 340Z is provided for cutting a portion of the wire W, which forms a loop Ru, from other sections, and is provided with a fixed blade and a movable blade. In addition, it is possible that at least a parallel guide 330 is located on the main portion of the first guide block 50 for folding wire W in the form of a loop.

[0356] In addition, the stop portion 250 (see FIG. 82) of the far end side of the main body 10B is located on both sides of the loop Ru of the wire W in the axial direction and is provided in pairs at the left and right at a predetermined distance. A twist unit 350 is provided in the main body 10B between the right and left thrust portions 250, which allows the wire W to be tightened relative to the reinforcing bar S by twisting and tightening the wire W bent into the loop Ru, as illustrated in side view in FIG. 87, in plan view in FIG. 88 and in a plan view in section in FIG. 89. The twist unit 350 is provided with a clamping portion 70 for inserting, releasing or holding the wire W, a torsion motor 370Z for twisting (rotating) the clamping portion 70 a predetermined number of times, and an actuator 380Z for opening or twisting or retracting of the clamping portion 70 with respect to the wire W .

[0357] As illustrated in FIG. 89, the clamping portion 70 is provided with a fixed clamping element (central hook) 70C and a pair of left and right first movable clamping elements (hook) 70L and a second movable clamping element (hook) 70R and can be provided with a left and right wire guide portion for passing each from overlapped sections of wire W, bent into a Ru loop. Furthermore, the actuator 380Z for opening and closing the clamping portion 70 generally includes a screw shaft 380a, a sleeve (movable member) 380b screwed and connected to the outer peripheral side of the screw shaft 380a, and a screw mechanism having a rotation limiting portion 380c for sleeve rotation restrictions 380b or release rotation restrictions.

[0358] An actuator 380Z is disposed between the clamping portion 70 and the torsion motor 370 (motor). The actuator 380Z performs opening and closing operations or the torsion operation of the clamping portion 70 by relative displacement of the sleeve 380b in the longitudinal direction relative to the screw shaft 380a due to the rotation of the screw shaft 380a. In addition, the actuator 380Z can work in conjunction with a cutting unit 340Z or a parallel guide 330 of the main portion of the first guide block 50, etc. using the deadlock mechanisms 340a and 330a (see FIG. 87).

[0359] In addition, by twisting the wire W, the actuator 380Z closes the clamping portion 70 (its first movable clamping member 70L and the second movable clamping member 70R) to hold the overlapped portion of the wire W bent into the loop Ru and then twists it. After the loop Ru of the wire W is completely twisted, the actuator 380Z is in standby mode with the clamping portion 70 (the left and right first movable clamping element 70L and the second movable clamping element 70R) in the open state. The configuration of the clamping portion 70 is illustrated in FIG. 10, 11, 12, 13A and 13B described above. In addition, the operation of the clamping portion 70 is illustrated in FIG. 29A, 29B, 29C, 30A, 30B, and 30C described above.

[0360] Wire feed unit 160, twist unit 350, and the like. are controlled by a control device 390Z (see FIG. 84) installed in the main body 10B.

[0361] Also, as illustrated in FIG. 90, the coil 120 is provided with a tubular hub section 410, which serves as a center for winding wire W, and a pair of flange sections 420 and 430 provided integrally at both axial end sections (or periphery) of the hub section 410. Flange sections 420 and 430 essentially have the shape of a disk of a larger diameter than the hub section 410, and are provided concentrically with the hub section 410. It is preferable that the pair of flange sections 420 and 430 have the same diameter, or a flange section 420 located on the inside (art. the opposite side of the opening 570 or the cover 580 described below, on the left side of the drawing) of the housing unit 110, based on the direction of attachment and detachment of the coil 120 relative to the housing unit 110, may have a smaller diameter than the diameter of the flange portion 430 located on the front side ( side of the hole 570 or cover 580 on the right side of the drawing). At flange sections 420 and 430, a reinforcing rib, a section of reduced thickness, and the like can be respectively formed. (see Fig. 87, etc.). In addition, the coil 120 is preferably made of resin having a high resistance to wear and bending, for example, of ABS resin, polyethylene and polypropylene.

[0362] Furthermore, the coil 120 is not rotated inside the enclosing unit 110, but rotates (driven) in accordance with the drawing of the wire W. For this purpose, a portion of the rotating shaft (or a rotating guide block is provided between the coil 120 and the accommodating unit 110 ) to maintain rotation of the coil 120.

[0363] In this case, the wire W is drawn substantially upward by rotating the coil 120 in a clockwise direction from the position of the front portion of the lower side of the coil 120 (see FIG. 82). In addition, the coil 120 is located in an offset state from one side of the left-right direction (for example, from the left side of the machine (see the right side in Fig. 90) so that it is suitable for the right-hander). In particular, the coil 120 can be fully offset laterally with respect to the first guide unit 50. However, the coil 120 can be offset in the opposite direction to the above side with respect to the main body 10B or the wire feed unit 160.

[0364] In addition, embodiments of the above basic or general configurations have the following configurations.

[0365] (1) The main body 10B is provided with an accommodating unit 110 adapted to receive and install a coil 120 on which the wire W is wound. The reinforcing bar strapping machine 1B includes a wire feed unit 160 that feeds the wire W from the coil 120 housed in the accommodating unit 110. In addition, as illustrated in FIG. 91, a wire movement restriction block 101 is provided on the inner wall 510 to prevent a situation in which the wire W sagging in the enclosing block 110 is in contact with the inner wall 510 of the enclosing block 110 (see arrow a) and is laterally moved axially along the coil 120 along inner wall 510 (see arrow b) (at a predetermined position or the like).

[0366] Here, the inner wall 510 of the accommodating unit 110 denotes the entire inner surface of the wall forming the enclosing unit 110. In particular, the wire movement restriction unit 110 is provided for a portion subject to sagging of the wire W in the enclosing unit 110. In particular, when the coil 120 is placed in the accommodating unit 110 (coil-holding unit 110a), the peripheral wall 520 of the coil-holding unit 110a is located on the outer peripheral side of the coil 120, in particular, the peripheral wall 520 in a width direction that is opposite to the periphery edge edge sections of flange sections 420 and 430 and its peripheral section. The peripheral wall 520 of the coil accommodating unit 110a is a (partial) cylindrical surface or the like having a diameter slightly larger than the diameter of the pair of flange sections 420 and 430.

[0367] The transverse movement of the wire W is caused by the displacement of the coil 120 to one side relative to the main body 10B and the wire feed unit 160 in a left-right direction and generally occurs in a displacement direction (for example, to the right side). Block 101 restrictions on the movement of the wire can be of any type, but preferably is made as follows.

[0368] (2) The wire movement restricting unit 101 may be a protrusion 105 protruding from the inner wall 510 into the enclosing unit 110.

[0369] Here, the wire movement restriction block 101 is provided at least in the position of the peripheral wall 520 of the inner wall 510 of the housing unit 110. The protrusion 105 serving as the wire movement restriction unit 101 may protrude from the wall surface of the peripheral wall 520 to the inside of the housing unit 110 and can be of any shape, provided that the transverse movement of the wire W. is limited. The protrusion 105 is provided in the position in which the wire W abuts, moving in the transverse direction along the peripheral wall 520 (hook u), and has a difference in shape and height that the wire W has been securely captured. For this reason, the lateral movement of the wire W, moved in the transverse direction, is even more reliably prevented by the protrusion 105. The protrusion 105 may be, for example, a protrusion, one or a plurality of rod protrusions, a protruding wall or the like.

[0370] The protrusion 105 is provided in a position that is biased in the bias direction of the coil 120, in a portion 131 (see FIGS. 82 and 93A) in which the sag wire W is most in contact with the inner wall 510 of the housing unit 110 in the housing unit 110.

[0371] (3) A wire movement restricting unit 101 is provided on an inner wall 510 located on the side opposite to the wire feeding unit 160 through the coil 120.

[0372] Here, the phrase "is located on the opposite side of the wire feed unit 160 through the coil 120" means a position that is further from the wire feed unit 160 than the hub section 410 in the inner wall 510. In particular, it means a position around the bottom inner wall 510 (lower position in FIG. 91) and the like. The reason that the wire movement restriction unit 101 is located at a position remote from the wire feed unit 160 is because it is a part that easily becomes a part in which the wire W sagging in the enclosing unit 110 is most in contact with the inner wall 510, or part 131, which is most in contact with the inner wall 510.

[0373] (4) The accommodating unit 110 may receive a coil 120 having a hub portion 410 serving as a core for winding wire W, and a pair of flange portions 420 and 430 provided on both ends of the hub portion 410. The inner wall 510 has a peripheral a wall 520 facing the hub portion 410 when the coil 120 is placed. The wire movement restriction block 101 protrudes toward the coil 120 from the wall surface at or near the end portion of the peripheral wall 520.

[0374] Here, although the wire movement restricting unit 101 can be provided in an arbitrary position at or near an end portion of the peripheral wall 520, it is preferably provided as follows.

[0375] (5) The wire movement restricting unit 101 is formed so as to protrude in the direction of the flange portions 420 and 430 from the wall surface at or near the end portion of the peripheral wall 520.

[0376] Here, a wire movement restricting unit 101 may be provided for one or both of the flange sections 420 and 430. In this case, a wire movement restricting unit 101 is provided on the side of the flange portion 430.

[0377] (6) The wire movement restricting unit 101 may be a vertical wall extending from the wall surface of the peripheral wall 520 and having a length that does not reach the flange portions 420 and 430.

[0378] Here, the block 101 restricting the movement of the wire can have any length within a range that does not reach the flange sections 420 and 430, but it is preferable to place them with a small gap that does not allow interaction with the peripheral edge section of the flange sections 420 and 430 facing each other to friend. More preferably, the gap is less than the diameter of the wire W. The vertical wall as the block 101 to limit the movement of the wire is a wall that is provided in the peripheral wall 520 and extends into the enclosing unit 110, and forms a stepped portion relative to the peripheral wall 520 of the inner wall 510. Preferably so that the vertical wall extends in the circumferential direction of the coil 120. The far end portion of the vertical wall has an arc shape of a slightly larger diameter than the flange sections and 420 and 430, and slightly smaller in diameter than the peripheral wall 520 forming the inner wall 510 of the container 560.

[0379] (7) A specific configuration of the housing unit 110 will now be described. The housing unit 110 includes an element, for example, a container 560 that can accommodate the coil 120, and a lid 580 that can open and close the hole 570 for installing the coil 120 provided in container 560.

[0380] Here, the container 560 is a so-called store or the like. and is a security element or the like. to protect the wire W drawn from the coil 120 or the coil 120. The container 560 has at least a substantially cylindrical recessed portion (coil holding unit 110a) configured to receive the coil 120 therein.

[0381] On the upper side of the cylindrical coil-holding unit 110a, a container (wire passage 110b) is provided in the container 560 for guiding the wire W drawn from the coil 120 to the wire feeding unit 160 (parallel guide 310 from the input side) (see FIG. 82). The wire passage 110b is integrally formed with the coil accommodating unit 110a and forms a space (free space) through which the wire W. can pass freely. In this case, the wire passage 110b has a transverse shape, tapering upward (or expanding downward), gradually decreasing from the enclosing coil unit 110a in the direction of the wire feed unit 160. The container 560 is a polymer body formed integrally with the main body 10B. Like the coil 120, the container 560 is preferably made of resin having high wear and bending resistance, for example, of ABS resin, polypropylene polyethylene or the like.

[0382] An opening 570 may be provided on either side of the container 560 on the right and left sides. In this case, it is provided on the offset side (left side of the device).

[0383] On the other hand, the lid 580 is a so-called store lid or the like, made of resin and has an edge portion essentially the same shape as the opening 570 of the container 560 (that is, the shape in which the bottom the side is a circle, and the upper side is a tapering upper side). The lid 580 is mounted so as to open and close relative to the container 560, being held in the hinge portion 610 (see Fig. 82). The hinge portion 610 is provided in a position from the rear side of the accommodating unit 110. A bias spring is located in the hinge portion 610 to bias the lid 580 in the opening direction relative to the container 560. Like the container 560 and the reel 120, the lid 580 is preferably made of resin having high wear resistance and bending, for example, from ABS resin, polyethylene, polypropylene or the like.

[0384] A locking device 620 (see FIGS. 82 and 93B) is provided between the container 560 and the lid 580 to hold the lid 580 closed. In this case, the locking device 620 may be provided in any position, but is preferably located as described below.

[0385] In the case where the accommodating unit 110 includes a container 560 and a cover 580, a peripheral wall 520 may be provided to enclose a container 560 and a cover 580, and the wire movement restriction unit 101 (protrusion 105) is set relative to the position in the peripheral a wall 520 in which the docking portion (position of the edge portion of the opening 570 of the container 560) between the container 560 and the lid 580 can be removed. FIG. 91, the wire movement restriction unit 101 (protrusion 105) is formed in a position on the front side (right side of the figure) of the containing unit 110, i.e., on the side of the lid 580, than the docking portion between the lid 580 and the container 560.

[0386] As illustrated in FIG. 90, large and small concentric guide ribs 650, 660 and the like protruding from it are provided between the outer surface of the flange portion 420 of the coil 120 located on the rear side of the accommodating unit 110 and the side surface of the accommodating coil unit 110a of the container 560. Similarly, between the outer surface of the flange portion 430 of the coil 120 located on the front side of the enclosing unit 110, and the inner surface of the cover 580, circular guide recesses 670 and guide protrusions 680 and the like are formed.

[0387] Alternatively, as another embodiment, as illustrated in FIG. 92, a wire movement restricting unit 101 may be provided on the inner wall 510 (in particular, on the peripheral wall 520) from the side of the container 560.

[0388] Here, the wire movement restricting unit 101 of the container 560 is formed in the form of a protrusion 105a similar to that described above. It is assumed that the wire movement restriction unit 101 of the container 560 has such a shape and height difference that the wire W sagging inside the enclosing unit 110 is securely gripped in the transverse direction, similar to the wire movement restriction unit 101 (protrusion 105) provided in the lid 580 of FIG. . 91. The protrusion 105a is provided in the position on the outer peripheral side of the flange portion 430 located on the front side relative to the enclosing unit 110, or in a position slightly weaker than the position on the back side of the enclosing unit 110. When the direction of the transverse movement of the wire W is reversed from the outer peripheral side of the flange portion 420 located on the rear side relative to the enclosing unit 110, may be provided in a more forward position of the enclosing unit 110.

[0389] In FIG. 92, the wire movement restriction unit 101 (protrusion 105a) is located closer to the inner side of the enclosing unit 110 (left side in the drawing) than the docking portion between the lid 580 and the container 560 forming the inner wall 510 of the enclosing unit 110, respectively. In addition, the edge portion of the lid 580 is in contact with the outer side surface (the side surface on the right side of the drawing) of the wire movement restriction unit 101 (protrusion 105a).

[0390] In addition, in addition to the docking portion between the container 560 and the lid 580, a configuration similar to each of the wire restriction blocks 101 (protrusions 105, 105a) can be provided, if necessary, to prevent problems due to the penetration of the wire W between a container 560 and a coil 120, or between a cover 580 and a coil 120.

[0391] (8) When the coil 120 is placed, the wire movement restricting unit 101 extends from the inner wall 510 from the side of the container 560 or from the side of the lid 580 to the flange section 430 from the side closer to the hole 570 from a pair of flange sections 420 and 430 and can be formed a vertical wall protruding in the direction of the flange portion 430.

[0392] (9) In addition, as illustrated in FIG. 93A (also in FIGS. 93B and 93C), inclined sections 111 and 112 may be formed in the portion of the docking portion between the container 560 and the lid 580 in the direction of intersection with the wire W sagging inside the enclosing unit 110. In FIG. 93B and 93C, the letter (a) is added to the reference positions of the inclined sections 111 and 112 from the side of the container 560 (i.e., 111 (a), 112 (a)), and the letter (b) is added to the reference positions of the inclined section 111 from the side lids 580 (i.e., 111 (b), 112 (b)) to indicate a difference.

[0393] Here, the docking portion between the container 560 and the lid 580 represents the position (edge) of the hole 570 of the container 560. In this case, the hole 570 (docking section) is generally formed in the position of the flange portion 430 of the coil 120 located on the front side relative to the containing block 110 or near it.

[0394] In addition, at least one of the inclined sections 111 and 112 (in this case, the inclined section 111) is inserted between the container 560 and the lid 580 or between the container 560 and the lid 580 to prevent the wire W from escaping outward (the blocking prevention unit or the block prevent departure).

[0395] The inclined sections 111 and 112 are inclined relative to the circumferential direction and the axial direction of the coil 120. The inclined sections 111 and 112 (in particular, the inclined section 111) are practically not inclined relative to the thickness direction of the container 560 and are not intended to change the thickness of the container 560. The angle of inclination inclined sections 111 and 112 are from about 30º to 60º, preferably 45º, or the like. relative to the axial direction of the coil 120.

[0396] At the same time, at least one of the inclined sections 111 and 112 is preferably provided for the section 131 in which the sagging wire W comes into contact with or near the inner wall of the enclosing unit 110, and has an inclination towards the rear side of the enclosing unit 110 as it moves from the wire feed unit 160.

[0397] In this case, the inclined portion 111 located on the lower side of FIG. 93A, is inclined downward and gradually toward the rear side (the side opposite to the opening 570) of the container 560. As a result, at least under the inclined section 111, the docking section between the container 560 and the lid 580 is partially offset to the rear side of the enclosing unit 110 than the position of the inner surface of the flange plot 430 of the coil 120 located on the front side of the containing block 110, and the position of the block 101 of the movement of the wire. Thus, a lower inclined portion 111 is provided for the portion 131 (see FIG. 82), where the sagging wire W is most in contact with, or adjacent to, the inner wall 510 of the containing unit 110. In particular, as illustrated in FIG. 93B, a lower inclined portion 111 is provided in a position between the hinge portion 610 and the locking device 620 on the underside of the container 560 and on the rear side.

[0398] An inclined portion 111 may be provided in combination with a wire movement restricting unit 101 (protrusions 105, 105a). In addition, the inclined portion 112 is accordingly provided for adjusting the shape of the docking portion between the container 560 and the lid 580.

[0399] As illustrated in FIG. 93A (see also FIG. 90), the container 560 may have a pressure mechanism 121 that elastically presses and holds the lid 580 toward the container 560.

[0400] Here, the clamping mechanism 121 includes means for preventing the ingress of the wire W between the container 560 and the lid 580 and preventing the wire W from flying out between the container 560 and the lid 580 to the outside (the means of preventing ingress or the block of preventing departure). The clamping mechanism 121 may be provided on the hinge section 610 or the like, but in this case it is provided in one piece with the locking device 620.

[0401] As illustrated in FIG. 90, the locking device 620 includes a locking lever 122 for pressing the cover 580 externally, a rotary shaft 124 attached to the end portion of the locking lever 122 with a pin 123 or the like, and a shaft hole 125 that accommodates and supports the rotary shaft 124 c the ability to move and rotate in the axial direction of the coil 120. When the clamping mechanism 121 is integrated in the locking device 620, an additional biasing unit 126 is provided for biasing the locking lever 122 in the direction of the cover 580.

[0402] The locking lever 122 extends along the surface of the cover 580. The cover 580 is provided with a pressing portion 580b (see FIG. 94B) pressed by the locking lever 122. The rotating shaft 124 and the shaft hole 125 extend in the axial direction of the coil 120. The shaft hole 125 represents a stepped hole provided in the peripheral portion of the container 560, and on the side of the lid 580 is a small diameter portion having substantially the same diameter as the rotating shaft 124, and is a large diameter portion in which the side protrudes vopolozhnaya cover 580 more rotary shaft 124. The locking lever 122 is attached rotatably around a rotating shaft 124 with respect to the end portion of the rotating shaft 124 inserted into the hole 125 for the shaft and projecting toward the cover 580.

[0403] The biasing unit 126 is a coil spring inserted between the rotating shaft 124 and the large diameter portion of the shaft bore 125. A coil spring is located between the stepped portion between the small-diameter portion and the large-diameter portion of the shaft bore 125 or rib 127 formed in the stepped portion and a flange 128 formed in the end portion of the rotary shaft 124 (from the opposite side relative to the locking lever 122) in a compressed state (compression spring).

[0404] If necessary, the clamping mechanism 121 may be provided in combination with the inclined portion 111 and the wire movement restriction block 101 (protrusions 105 and 105a).

[0405] (12) The pressure mechanism 121 presses and holds the portion 131 corresponding to the inner wall 510, where the sagging wire W is in contact with it in the enclosing unit 110 or near it in the cover 580.

[0406] Here, the portion 131 where the sagging wire W is (most strongly) in contact with the inner wall 510 of the housing unit 110 is a peripheral portion of the housing unit 110a located on the lower side of the housing unit 110. Since the housing unit 110a is located on the lower side of the reinforcing bar strapping machine 1B, sagging of the wire W easily arises due to its own weight, whereby the wire W is also drawn into the wire feeding unit 160. In this regard, the portion 131, where the sagging wire W (most strongly) is in contact with the inner wall 510 of the host unit 110, is located near the peripheral wall 520 (the portion below the lower side portion) in the host coil unit 110a, in particular the lower portion of the peripheral wall 520 or the like In this case, the pressure mechanism 121 presses and holds the position of the lowest part of the cover 580 or its periphery.

[0407] As illustrated in FIG. 94B-94E (mainly in FIG. 94E), as a stop limit limiting unit for preventing the stop lever 122 from stopping in an intermediate position between the lock position and the release position, stop prevent sections 141 and 142 are provided.

[0408] Here, between the container 560 and the main portion of the locking lever 122, guide surfaces 143 and 144 are respectively provided for guiding the rotation of the locking lever 122. In the guide surfaces 143 and 144, hill-shaped protrusions 145 and 146 are formed so as to enter one another in a position that is the boundary between the lock position and the release position. The hill-shaped protrusions 145 and 146 clearly separate the locking position and the release position and prevent accidental displacement of the locking lever 122 between the locking position and the release position. The guide surfaces 143 and 144 and the protrusions 145 and 146 form a guide block of the locking lever 122. The unstable shapes 147 are provided as stopping portions 141 and 142 in the upper portions of the protrusions 145 and 146.

[0409] Here, the guide surfaces 143 and 144 have a flat circular shape or an annular shape having a surface perpendicular to the rotating shaft 124 of the locking lever 122. One or a plurality of hill-shaped protrusions 145 and 146 are provided relative to the guide surfaces 143 and 144 in the circumferential direction at the required interval. In this case, four places are provided in the circumferential direction.

[0410] In addition, as illustrated in FIG. 94F, the upper portions (stopping prevention portions 141 and 142) of the protrusions 145 and 146 may be flat portions parallel to the guide surfaces 143 and 144. However, since the flat portions are stable in shape if the vertices of the protrusions 145 and 146 are in the form of long flat portions, the locking lever 122 can be stably stopped in the positions of the upper portions of the protrusions 145 and 146. Thus, when the locking lever 122 is stopped in the position of the upper portion of the protrusions 145 and 146, the locking lever 122 is displaced from the container 560, so that the lid 58 0 opens slightly relative to the container 560, forming a gap, and there is a likelihood of the wire W coming out of the gap.

[0411] In this regard, in the upper portions of the protrusions 145 and 146, an unstable shape portion 147 is provided as stopping prevention portions 141 and 142. For example, an unstable portion 147 can be provided so that the upper portions of the protrusions 145 and 146 are rounded portions, the upper portions of the protrusions 145 and 146 are pointed portions, the upper portions of the protrusions 145 and 146 are short flat portions, or the upper portions of the protrusions 145 and 146 are inclined sections (the inclination is less than the inclination of the protrusions 145 and 146) or the like.

[0412] Furthermore, instead of the unstable shape portion 147 in the upper portion of the protrusions 145 and 146, or in addition to the unstable shape portion 147 between the end portion of the locking lever 122 and the pressing portion 580b of the cover 580 on the locking lever 122, another stopping portion can be provided, configured to stop in an intermediate position between the locking position and the release position. Another stopping portion between the end portion of the locking lever 122 and the pressing portion 580b of the cover 580 may be, for example, a pointed portion or the like.

Work

[0413] Next, operation of the present embodiment will be described.

[0414] As illustrated in FIG. 82 and 84, the reinforcing bar strapping machine 1B mounts the coil 120, on which the wire W is wound, in the holding unit 110 and rotates the coil 120 clockwise from the position of the lower front portion of the coil 120. The wire W is brought into a ready-to-use state by pulling the top and passing through the wire feed unit 160, the first guide unit 50 of the folding guide unit 5A, and the like.

[0415] To install the coil 120 in the accommodating unit 110, the locking device 620 is first released, the lid 580 is opened relative to the container 560, the coil 120 is installed in the container 560, the lid 580 closes the container 560 after installing the coil 120, and the lid 580 is locked by the locking device 620. B in this regard, the coil 120, on which the wire W is wound, and the wire W drawn from the coil 120 are placed and protected by the container 560.

[0416] In addition, the power switch of the main body 10B is turned on, the lock switch 800 is released, the reinforcing bar S is brought into contact with the abutment portion 250 (strapping unit 150) of the main body 10B, and the trigger 12B is pressed. Thus, the strapping machine 1B is driven and links the reinforcing bars S.

[0417] At the same time, when the trigger 12B is pressed first, as illustrated in FIG. 95, a certain amount of wire W is fed by the feed gear 170 of the wire feed unit 160 to the upper first guide unit 50, and the wire W is folded by the first guide unit 50 (bending groove) so that it is directed forward and downward. The end of the bent wire W rotates in a counterclockwise direction and enters the second guide block 51 and is guided by the second guide block 51 so as to pass through the inner part of the clamping section 70 of the twisting section 350 and the periphery of the reinforcing bar S, and abuts against the main section of the first guide block 50 loops Ru, covering the periphery of the reinforcing bar S (wire feed process).

[0418] Then, the twisted portion 350 operates, and the position of the end of the wire W, in which the parallel guide 330 in the main portion of the first guide block 50 forms a loop Ru, is limited by the interlock mechanism 330a (see Fig. 87) or the like, and the end portion of the wire W is held by the clamping portion 70 (the process of clamping the wire).

[0419] In addition, as illustrated in FIG. 96, the feed gear 170 of the wire feed unit 160 rotates in the opposite direction to retract a predetermined amount of wire W downward (wire return process). By retracting the wire W, it is possible to minimize the amount of wire W used for one strapping and increase the number of strands. In addition, the shape of the wire winding W, which binds the reinforcing bar S, is small and is in a well-formed state. However, sagging of the wire W may occur when the wire W is retracted inside the enclosing unit 110. In addition, sagging of the wire W can occur, for example, when the coil 120 is rotated too much due to inertia of rotation during drawing of the wire W, or if the coil 120 is turned too much due to vibration occurring in machine 1B for strapping reinforcing bars or the like.

[0420] Next, as illustrated in FIG. 97, the cutting unit 340Z operates to cut wire W (wire cutting process).

[0421] Thereafter, as illustrated in FIG. 98, the clamping portion 70 of the twisting portion 350 is twisted to twist the wire W, and the clamping portion 70 is advanced so as to reduce the loop Ru and install the twisted portion of the wire W on the reinforcing bar S, as a result, the binding is carried out by tightening the loop (the process of twisting the wire).

[0422] Finally, as illustrated in FIG. 99, the clamping portion 70 is withdrawn from the reinforcing bar S, and the strapping is completed by releasing the twisted portion of the wire W (wire release process).

Effects

[0423] In accordance with the present embodiment, the following effects can be obtained.

Effect 1

[0424] The wire W sagging inside the enclosing unit 110 is bent so that it expands outside the coil 120 inside the enclosing unit 110 and is in contact with the inner wall 510 of the enclosing unit 110 (arrow a). In addition, when the wire W is bent, the wire W is in close contact with the inner wall 510 of the housing unit 110. In the case of further sagging of the wire W from this state, the wire W looks for additional exit space (as illustrated by arrow b in Fig. 91) and moves to the transverse direction in the axial direction of the coil 120 along the inner wall 510 (containing the coil unit 110a) of the containing unit 110 (while bending).

[0425] As a result, for example, as illustrated in FIG. 100 and 101, in the absence of countermeasures, the wire W is moved by lateral movement (arrow b) so that the wire W falls between the containing unit 110 (inner wall 510) and the coil 120 (flange portion 430 from the near side), and the wire W trapped between the host unit 110 and the coil 120, passes further between the host unit 110 and the coil 120, and as a result can fly out of the host unit 110 to the outside.

[0426] In this regard, as illustrated in FIG. 91, a wire movement restriction block 101 is provided on the inner wall 510 of the accommodating block 110, so that the lateral movement of the wire W is limited by the wire movement restriction block 101. This makes it possible to reliably prevent a malfunction due to the transverse movement of the wire W (for example, the penetration of the wire W between the accommodating unit 110 and the coil 120, the release of the wire W to the outside, etc.). That is, the wire movement limiting unit 101 can effectively deal with a malfunction caused by the sagging of the wire W in the enclosing unit 110.

Effect 2

[0427] At the same time, the wire movement restricting unit 101 is used as the protrusion 105, so that the transverse movement of the wire W is stopped at the preset position of the protrusion 105. This allows you to reliably limit the transverse movement of the wire W in a predetermined position using a simple configuration. In addition, since the protrusion 105 has a simple configuration, it is easy to provide the protrusion 105 with respect to a position that is optimal for limiting the lateral movement of the wire W, which is suitable for providing the block 101 for restricting the movement of the wire.

 Effect 3

[0428] A wire movement restriction block 101 is provided on the inner wall 510 located on the side opposite to the wire feed unit 160 through the coil 120. This allows the wire movement restriction block 101 to be efficiently provided with respect to the position in which the sagging of the wire W easily occurs on the side opposite to the wire feed unit 160.

Effect 4

[0429] The accommodating unit 110 may receive a coil 120 having a hub portion 410 serving as a core for winding wire W, and a pair of flange portions 420 and 430 provided on both ends of the hub portion 410. The inner wall 510 has a peripheral wall 520, facing the hub section 410 when the coil 120 is placed. The wire movement restriction block 110 protrudes from the wall surface at or near the end portion of the peripheral wall 520 in the direction of the coil 120. Accordingly, the transverse movement of the wire Ki W, a sagging coil 120 may be limited at an end portion of the peripheral wall 520, or near unit 101 restricting movement of the wire projecting in the direction of the coil 120.

Effect 5

[0430] The wire movement restriction unit 101 protrudes from the wall surface at or near an end portion of the peripheral wall 520 in the direction of the flange sections 420 and 430. Accordingly, the lateral movement of the wire W sagging from the coil 120 may be limited in position immediately in front of the flange sections 420 and 430 by a block 101 for restricting the movement of the wire protruding in the direction of the flange sections 420 and 430.

Effect 6

[0431] The wire movement restriction block 101 is a vertical wall extending from the wall surface of the peripheral wall 520 and having a length that does not reach the flange sections 420 and 430. Thus, the interaction of the vertical wall with the flange sections 420 and 430 can be prevented, while by setting the height of the vertical wall so that it grips the wire W. In addition, by using the block 101 to limit the movement of the wire in the form of a vertical wall, it is possible to effectively control lateral movement of the wire W. Specifically, by setting the vertical wall so as to extend in the circumferential direction of the coil 120 can accept the transverse movement of the wire W in a wide range in the circumferential direction.

Effect 7

[0432] The housing unit 110 is provided with a container 560 and a lid 580. In this regard, by installing the coil 120 in the container 560 and closing the lid 580, the coil 120 can be securely placed in the housing unit 110 and held therein, while protecting the wire W from external influences .

[0433] When the enclosing unit 110 is formed by the container 560 and the lid 580, it is likely that the wire W may fly out of the container 560 and the lid 580 between the lid 580 and the coil 120 (see FIGS. 101 and 102) or between the container 560 and the lid 580 (see FIG. 102).

[0434] FIG. 100 and 101 illustrate an example in which, due to the lack of a block 101 for restricting the movement of the wire, the wire W moves in the transverse direction without stopping until the wire W reaches the docking portion between the container 560 and the lid 580.

[0435] Furthermore, in FIG. 102 due to the lack of a block 101 to limit the movement of the wire to prevent the wire W from entering the docking section between the container 560 and the cover 580, the wire W does not stop until the wire W reaches the docking section between the container 560 and the cover 580, and the wire W stops in the position of the docking portion between the container 560 and the lid 580 by the protrusion 580a provided on the edge portion of the lid 580, and thus the wire W easily enters the docking portion between the container 560 and the lid 580.

[0436] However, as illustrated in FIG. 91, even in the case where the accommodating unit 110 has a container 560 and a lid 580, it is possible to install the inner wall 510 of the accommodating unit 110 in a corresponding position (for example, in a position on the side of the lid 580). On the other hand, if the wire movement restriction unit 101 (protrusion 105) is provided in advance for proper operation, it is possible to prevent the penetration of the wire W into each section and the outflow of the wire W.

[0437] In addition, as illustrated in FIG. 92, a block 101 for restricting the movement of the wire, for example, a protrusion 105a can be provided on the inner wall 510 from the side of the container 560. As a result, the lateral movement of the wire W sagging inside the enclosing unit 110 is limited by the position of the block 101 for restricting the movement of the wire in the container 560. Thus , it is possible to prevent a situation in which the sagging wire W passes from the container 560 to the lid 580, and the wire W enters the connecting portion between the container 560 and the lid 580. As a result, the component t provided by the block 101 for restricting the movement of the wire, only by the container 560, to simplify the design of the enclosing unit 110, to facilitate the manufacture of the enclosing unit 110, and the like.

[0438] Furthermore, by providing the wire movement restriction block 101 on the inner wall 510 from the side of the container 560 so as to limit the lateral movement of the wire W in the position of the wire movement restriction block 101 in the container 560, the weakened wire W does not reach the docking portion between the container 560 and a cover 580. In this regard, the wire W expands and enters (enters) the docking section between the container 560 and the lid 580, and the wire W, which fell into the docking section, flies out of the docking section a, or the wire W is in contact with the container 560 and the coil 120 so that it does not fall between the container 560 and the cover 580. As a result, for example, malfunction (or poor bonding) of the reinforcing bar tying machine 1B due to pinching of the wire W, wire bending W, etc.

Effect 8

[0439] When placing the coil 120, the wire movement restriction block 101 is formed by a vertical wall protruding from the inner wall 510 from the side of the container 560 or the lid 580 in the direction of the hole 570 of the pair of flange sections 420 and 430 to the flange section 430. This prevents wire W from falling between flange section 430 from the side close to the hole 570, and the inner wall 510 from the side of the container 560 or cover 580.

Effect 9

[0440] As illustrated in FIG. 93A (up to Fig. 93C), inclined sections 111 and 112 (in particular inclined section 111) are provided in the docking section between the container 560 and the lid 580. As a result, a portion of the connecting portion between the container 560 and the cover 580 is displaced in the axial direction of the coil 120 by the inclined sections 111 and 112, so that all the connecting sections of the container 560 and the cover 580 are not in the same plane perpendicular to the axial direction of the coil 120. As a result, for example , a portion of the docking portion (e.g., a lower portion of the docking portion, or the like) is biased toward the rear side of the accommodating unit 110, and the docking portion between the container 560 and the lid 580 may be separated from the movement restriction block 101 rovoloki (105, 105a). In this regard, it is possible to provide a design in which the wire W will be difficult to get into the docking section between the container 560 and the lid 580, or fly out of the docking section between the container 560 and the lid 580.

[0441] Furthermore, for example, as illustrated in FIG. 103, in the case where a small stepped portion 710 or the like ensured by dimensional accuracy in the connecting section between the container 560 and the lid 580, in the absence of an inclined section 111, there is no part with which the transversely moving wire W begins to overcome a small step section 710. In this regard, for example, the wire W is captured by a small step section 710 the connecting portion between the container 560 and the lid 580, and the wire W, captured by a small stepped portion 710, extends the gap between the connecting sections, and the wire W, which fell into the gap, can fly from connection portion.

[0442] However, as illustrated in FIG. 93A, by providing an inclined portion 111 extending in a direction intersecting the wire W sagging inside the accommodating unit 110 in the above case, even if the wire W is temporarily gripped by a small stepped portion 710 of the connecting portion between the container 560 and the lid 580, since the inclined portion 111 functions as a starting point for moving the wire W, the wire W overcomes a small stepped section 710 from the position of the inclined section 111s, so that it can move in the transverse direction lion to block 101 restrictions on the movement of the wire. In this regard, if the wire W is captured by a small step section 710 of the docking section between the container 560 and the lid 580, or the wire W captured by the small step section 710 widens the gap of the docking section, this malfunction can be prevented due to the release of the wire W from the docking section out.

[0443] In the above description, if the locking device 620 and the clamping mechanism 121 are provided, the wire W passes between the container 560 and the cover 580 (cover 580) for a short time from the moment of capturing the wire W by a small step section 710 until the inclined section 111 is overcome and the locking device 620 and the pressing mechanism 121 prevent the locking device 620 and the pressing mechanism 121 from entering the docking portion, and thus, a synergistic effect can be obtained.

Effect 10

[0444] At the same time, at least one of the inclined sections 111 and 112 can be partially displaced to the back of the enclosing unit 110 relative to the section 131, where the sagging wire W is in contact with the inner wall of the enclosing unit 110, or near him. At least one of the inclined sections 111 and 112 may tilt toward the inside of the enclosing unit 110 as the distance from the wire feed unit 160 increases. By performing at least one of the inclined sections 111 and 112, as described above, it is possible to prevent the wire W from entering the docking section between the container 560 and the lid 580 or the wire W from flying out of the docking section between the container 560 and the lid 580.

Effect 11

[0445] As illustrated in FIG. 94A (Fig. 90), the clamping mechanism 121 is provided so as to elastically press and hold the lid 580 in the direction of the container 560. Thus, by constantly holding the lid 580 elastically pressed against the container 560 with the use of the required force, the play between the lid 580 and the container 560 is prevented and the lid can be pressed so that the gap between the container 560 and the lid 580 does not expand due to the force exerted by the sagging wire W. As a result, sagging wire W can effectively be prevented from entering the gap between the lids second 580 and the container 560, or departure from the gap to the outside.

[0446] Moreover, even in the case where a small step portion 710 is provided in the docking section between the container 560 and the lid 580, the clamping mechanism 121 can prevent sagging wire W from entering the gap between the lid 580 and the container 560, and effectively prevents the escape from the gap out.

[0447] In addition, by providing a clamping mechanism 121 in the locking device 620, it is possible to combine them and freely install the clamping mechanism 121 between the lid 580 and the container 560. It is structurally possible to provide the clamping mechanism 121 in the hinge portion 610 or the like.

Effect 12

[0448] In addition, the clamping mechanism 121 is provided in a portion 131 of the lid 580, where the wire W sagging inside the enclosing unit 110 is in contact with or near the inner wall 510. This allows the pressure mechanism 121 to be effectively positioned relative to the position where the gap between the lid 580 and the container 560 is most likely to be formed, and the gap between the lid 580 and the container 560 can be reliably and efficiently prevented from expanding by the pressure mechanism 121.

Effect 13

[0449] In order to prevent the locking lever 122 from stopping in an intermediate position between the locking position and the release position, stopping blocks 141 and 142 are provided. As a result, since the locking lever 122 is stopped in the intermediate position between the locking position and the release position, for example, it is possible to reliably prevent a malfunction in which the lid 580 opens slightly against the container 560, forming a gap, and the wire W leaves the gap.

[0450] For example, in the unstable portion 147, the upper portions of the protrusions 145 and 146 are formed as rounded portions, the upper portions of the protrusions 145 and 146 are formed as pointed portions, or the upper portions of the protrusions 145 and 146 are formed as short flat portions, or upper portions of protrusions 145 and 146 are formed as inclined portions (the inclination is less than the inclination of the protrusions 145 and 146). Thus, the locking lever 122 can be securely placed either in the locking position or in the release position.

[0451] In addition, instead of the unstable shape portion 147, another stopping block configured to prevent stopping the locking lever 122 in an intermediate position between the locking position and the release position. Another stopping portion between the end portion of the locking lever 122 and the pressing portion 580b of the cover 580 is, for example, a pointed portion or the like. Thus, the locking lever 122 can reliably move between the locking position and the release position.

[0452] Although an embodiment of the present invention is described in detail with reference to the drawings, an embodiment is only an example of the present invention. In this regard, the present invention is not limited only to the configuration in accordance with the embodiment, and it should be understood that changes in design, etc. without deviating from the essence of the present invention are included in the present invention. In addition, for example, in the case where many configurations are included in each embodiment, it should be understood that a possible combination of these configurations is included in the present invention, even if it is not specifically described. In addition, in the case where many embodiments and modifications are disclosed as embodiments of the present invention in an embodiment, even if not described, possible combinations of configurations covering them are included in the present invention. In addition, the design shown in the drawings is naturally included in the present invention, even if not specifically mentioned. In addition, the expression “etc.” is used in the sense that it includes equivalents. In addition, expressions such as “almost,” “about,” “to some extent,” etc., are used in the sense that they include ranges and precision that are implied by common sense.

[0453] Some or all of the above embodiments may be described as follows.

[0454] (Additional Note 1)

A strapping machine containing:

a casing that is configured to extend the wire;

a wire feed unit that feeds wire drawn from the casing,

a bending guide that bends the wire supplied by the wire feed unit and wraps the wire around the binding object; and

a strapping unit that clamps and twists the wire wrapped around the object of the strapping of the bending guide,

moreover, the strapping unit includes:

a first movable clamping element and a second movable clamping element, which are rotatably supported on an axis extending in the first direction from the other end side so that one end side can move towards and from each other; and

a moving member that extends in a first direction, and which is movable in a second direction orthogonal to the first direction,

moreover, each of the first movable clamping element and the second movable clamping element has a mounting section, so that the moving element is installed in the mounting section, and the installed moving element can move in the second direction.

[0455] (Additional Note 2)

A strapping machine according to supplementary note (1), in which the mounting portion is formed so as to extend along the longitudinal direction of the first movable clamping element and the second movable clamping element.

[0456] (Additional Note 3)

The strapping machine in accordance with supplementary note (2), in which the mounting portion is formed so as to extend along the longitudinal direction of the first movable clamping element and the second movable clamping element, to bend outwardly between the end portions of the mounting portion, and again to extend along the longitudinal direction.

[0457] (Supplementary Note 4)

The strapping machine in accordance with any of the additional notes (1) to (3), in which the installation section is a groove.

[0458] (Additional Note 5)

A strapping machine according to any one of additional notes (1) to (3), in which the mounting portion is an opening passing through the first movable clamping element and the second movable clamping element.

[0459] (Additional Note 6)

The strapping machine according to any one of additional notes (1) to (5), in which the strapping unit includes a fixed clamping element extending in a second direction, and

a first movable clamping element and a second movable clamping element are provided on both sides of the stationary clamping element relative to the fixed clamping element, one end side of the first movable clamping element is movable towards and away from the stationary clamping element, and one end side of the second movable clamping element The element is arranged to move in the direction of the stationary clamping element and away from it by rotation.

[0460] (Additional Note 7)

A strapping machine in accordance with supplementary note (6), in which the fixed clamping element has a mounting portion that is movable in the second direction by installing a moving member installed in the mounting portion of the first movable clamping element and the mounting portion of the second movable clamping element.

[0461] (Supplementary Note 8)

The strapping machine according to supplementary note (7), in which the mounting portion of the fixed clamping element is a groove extending in the second direction.

[0462] (Additional Note 9)

A strapping machine according to supplementary note (7), in which the mounting portion of the fixed clamping element is an opening that extends through the fixed clamping element and which extends in a second direction.

[0463] (Supplementary Note 10)

The strapping machine in accordance with any of the additional notes (6) to (9), in which a shaft is provided on the fixed clamping element.

[0464] (Supplementary Note 11)

A strapping machine containing:

a casing that is configured to extend the wire;

a wire feed unit that feeds wire drawn from the casing;

a bending guide that bends the wire supplied by the wire feed unit and wraps the wire around the strapping object; and

a strapping unit that clamps and twists the wire wrapped around the strapping object with a folding guide block,

moreover, the strapping unit includes:

a first movable clamping element and a second movable clamping element, which are rotatably supported on an axis extending in the first direction from the other end side so that one end side can move towards and from each other; and

a movable element that is movable in a second direction orthogonal to the first direction,

moreover, the first movable clamping element and the second movable clamping element have an opening and closing section of the shaft, which extends in the first direction,

the movable member has a mounting portion in which an opening and closing shaft portion is installed, and

the mounting portion is configured such that the movable member can move in the second direction in a state in which the opening and closing shaft portion is mounted in the mounting portion.

[0465] (Supplementary Note 12)

A strapping machine containing:

a casing that is configured to extend the wire;

a wire feed unit that feeds wire drawn from the casing;

a bending guide that bends the wire supplied by the wire feed unit and wraps the wire around the strapping object; and

a strapping unit that clamps and twists the wire wrapped around the object of the strapping of the bending guide,

moreover, the strapping unit includes:

fixed clamping element;

a movable clamping member that is rotatably supported by a fixed clamping member with an axis extending in the first direction from the other end side so that it can move in the direction of approaching one end side to the fixed clamping element and in a direction away from the stationary clamping member, and

a moving member that extends in a first direction, and which is movable in a second direction orthogonal to the first direction,

moreover, the movable clamping element has a mounting section in which the moving element is installed, and the installed moving element can move in the second direction.

[0466] Although the content described in the additional notes expresses part or all of the above embodiment, an additional explanation will be given below with reference to the application. FIG. 104 is a diagram illustrating an example of a strapping unit described in Supplementary Note 1, and FIG. 105 is a diagram illustrating an example of a tie block having a mounting block described in Supplementary Note 5. The tie block 7B includes a first movable clamp member 70L1 and a second movable clamp member 70R1 as a pair of clamp members. The first movable clamping element 70L1 and the second movable clamping element 70R1 are rotatable relative to the shaft 773 as a center of rotation.

[0467] If the direction of travel of the shaft 773, which is the axial direction of the shaft 773, is the first direction, and the direction orthogonal to the first direction is the second direction, the first movable clamping element 70L1 and the second movable clamping element 70R1 extend along the second direction. The first direction is indicated by arrow P1, and the second direction is indicated by arrow P2.

[0468] The first movable clamping element 70L1 and the second movable clamping element 70R1 are arranged so that one end side in the longitudinal direction along the second direction can move in the directions to each other and from each other (also called approach and distance), and the shaft 773 passes in the first direction, and the other end sides are rotatably supported by the main element 772. The shaft 773 is an elongated element and protrudes in the first direction from the main element 772.

[0469] The strapping unit 7B includes an opening and closing pin 71a1 (a moving member) that extends in a first direction and is movable in a second direction. The opening and closing pin 71a1 is attached to the above bending section (bending section) 71. The bending section 71 extends in the second direction and forms a space that includes part of the first movable clamping element 70L1 and the second movable clamping element 70R1, for example, has a substantially cylindrical shape , rectangular cylindrical shape. The opening and closing pin 71a1 protrudes in the first direction into the space inside the bending section 71.

[0470] The first movable clamping member 70L1 has an opening and closing guide hole (mounting portion) 77L1 into which the opening and closing pin 71a1 is mounted. The opening and closing guide hole 77L1 extends along the longitudinal direction of the first movable clamping element 70L1, as described in additional note 2. In addition, the opening and closing guide hole 77L1 is an opening that passes through the first movable clamping element 70L1, as described in additional note 5.

[0471] The second movable clamping member 70R1 includes an opening and closing guide hole (mounting portion) 77R1 into which the opening and closing pin 71a1 is mounted. The opening and closing guide hole 77R1 extends along the longitudinal direction of the second movable clamping element 70R1, as described in additional note 2. In addition, the opening and closing guide hole 77R1 is an opening that passes through the second movable clamping element 70R1, as described in additional note 5. As described in Supplementary Note 3, a configuration in which part of the mounting portion provided on the first movable clamping member 70L1 and the second under izhnom 70R1 clamping element flexes outwardly, is shown in FIG. 10 and the like, as described above.

[0472] The opening and closing pin 71a1 passes through the opening and closing guide hole 77L1, passes through the first movable clamping element 70L1, passes through the opening and closing guide hole 77R1, and passes through the second movable clamping element 70R1.

[0473] When the bending section 71 is moved in the second direction, the opening and closing pin 71a1 moves in the second direction along the opening and closing guide hole 77L1. In addition, the opening and closing pin 71a1 moves in the second direction along the opening and closing guide hole 77L1.

[0474] When moving the bending portion 71 in the direction of the arrow P2f, which is one direction along the second direction, the first movable clamping element 70L1 and the second movable clamping element 70R1 move the shaft 773 around the center of rotation. When moving the bending portion 71 in the direction of the arrow P2r, which is another direction along the second direction, the first movable clamping element 70L1 and the second movable clamping element 70R1 move the shaft 773 to the center of rotation.

[0475] FIG. 106 is a diagram illustrating an example of a strapping unit having a mounting portion described in Supplementary Note 4. The strapping unit 7B includes a first movable clamping member 70L2 and a second movable clamping member 70R2 as a pair of clamping members. FIG. 104 illustrates a construction in which a first movable clamping member 70L2 and a second movable clamping member 70R2 are rotatably supported with a shaft 773 as a center of rotation.

[0476] The first movable clamping member 70L2 has an opening and closing guide groove (mounting portion) 77L2 into which the first opening and closing pin 710a1 is mounted. The opening and closing guide groove 77L2 extends along the longitudinal direction of the first movable clamping member 70L2. Furthermore, as described in Supplementary Note 4, the opening and closing guide groove 77L2 is a groove through which the first movable clamping member 70L2 does not extend.

[0477] The second movable clamping member 70R2 includes an opening and closing guide groove (mounting portion) 77R2 into which a second opening and closing pin 710a2 is mounted. The opening and closing guide groove 77R2 extends along the longitudinal direction of the second movable clamping member 70R2. In addition, the opening and closing guide groove 77R2 is a groove through which the second movable clamping member 70R2 does not extend, as described in additional note 4.

[0478] In the bending section 71, the first opening and closing pin 710a1 and the second opening and closing pin 710a2 are provided coaxially. The first opening and closing pin 710a1 and the second opening and closing pin 710a2 protrude in the first direction into the space inside the bending section 71 and extend in the first direction, respectively.

[0479] When the bending portion 71 is moved in the second direction, the first opening and closing pin 710a1 moves in the second direction along the opening and closing guide groove 77L2. In addition, the second opening and closing pin 710a2 moves in the second direction along the opening and closing guide groove 77R2.

[0480] FIG. 107 and 108 are diagrams illustrating an example of a strapping unit described in Supplementary Note 11. The strapping unit 7C includes a fixed clamping member 70C3, a first movable clamping member 70L3, and a second movable clamping member 70R3.

[0481] The first movable clamping element 70L3 and the second movable clamping element 70R3 are located in the transverse direction relative to the stationary clamping element 70C3. The first movable clamping member 70L3 is rotatable relative to the stationary clamping member 70C3 with a shaft 773a as a center of rotation. The second movable clamping element 70R3 is rotatable relative to the stationary clamping element 70C3 with the shaft 773a as the center of rotation.

[0482] If the direction of travel of the shaft 773a, which is the axial direction of the shaft 773a, is the first direction, and the direction orthogonal to the first direction is the second direction, the fixed clamping member 70C3, as well as the first movable clamping member 70L3 and the second movable clamping member 70R3 run along the second direction.

[0483] The first movable clamping member 70L3 is movable so that one end in the longitudinal direction along the second direction can move in the direction from (toward and away from) one end side of the fixed clamping member 70C3. The shaft 773a extending in the first direction and the other end side are rotatably supported by the fixed clamping member 70C3. The second movable clamping element 70R3 has a shaft 773a extending in the first direction so that one end side of the second movable clamping element 70R3 in the second direction in the longitudinal direction can move away from one end side of the fixed clamping element 70C, and the other end side is supported with rotatable fixed clamping element 70C3. The shaft 773a is an elongated member and protrudes in a first direction from the stationary clamping member 70C3.

[0484] In this regard, the first movable clamping element 70L3 is rotatably supported by the fixed clamping element 70C3 from the other end side of the shaft 773a so that one end side can move in the direction of approaching and moving away from one end side of the fixed clamping element 70C3. The second movable clamping element 70R3 is rotatably supported on the fixed clamping element 70C3 at its other end by the shaft 773a so that one end side can move in the direction of approaching and moving away from one end side of the fixed clamping element 70C3.

[0485] The strapping unit 7B includes an opening and closing pin (opening and closing shaft portion) 70Lp extending in the first direction. The opening and closing pin 70Lp is attached to the first movable opening and closing clamping member 70L3 and the second movable opening and closing clamping member 70R3 (not illustrated) and protrudes in the first direction from the first movable opening and closing clamping member 70L3 and the second movable opening and closing clamping member 70R3. The opening and closing pin 70Lp passes through the arcuate geometrical point location by rotating the first movable open and close clamping element 70L3 and the second movable open and close clamping element 70R3 with the shaft 773a as the center of rotation.

[0486] The strapping unit 7B includes a movable member 711 configured to move in a second direction. The movable member 711 is the aforementioned bending portion. The movable member 711 includes an opening and closing guide hole (mounting portion) 712 into which the opening and closing pin 70Lp is mounted. The opening and closing guide hole 712 extends along the longitudinal direction of the movable member 711. In particular, the opening and closing guide hole 712 includes a first idle portion 712a extending at a first idle distance along the travel direction of the movable member 711, a second idle portion 712b extending along the direction of movement of the movable element 711, and opening and closing portion 712c, passing so that it is obliquely curved outward from one end of the first ASTK 712a idle and connected to the second portion 712b of idling. Although not illustrated, the opening and closing guide hole into which the opening and closing pin 70Lp provided in the second movable clamping member 70LR3 is mounted has the same configuration.

[0487] When moving the movable member 711 in the second direction, the opening and closing guide hole 712 moves in the second direction. When the opening and closing part 712c of the opening and closing guide hole 712 passes the position of the opening and closing pin 70Lp, the opening and closing pin 70Lp is displaced by the shape of the opening and closing part 712c.

[0488] As a result, when moving the movable member 711 in the direction of the arrow P2f, which is one direction along the second direction, as illustrated in FIG. 86, one end side of the first movable clamping member 70L3 rotates in the direction of approach to the stationary clamping member 70C3 with a shaft 773a as a center of rotation. In addition, one end side of the second movable clamping element 70R3 rotates in the direction of approach to the stationary clamping element 70C3 with the shaft 773a as the center of rotation.

[0489] When moving the bending portion 71 in the direction of the arrow P2r, which is another direction along the second direction, as illustrated in FIG. 83, one end side of the first movable clamping member 70L3 rotates away from the stationary clamping member 70C3 with the shaft 773a as the center of rotation. In addition, one end side of the second movable clamping element 70R3 is rotated away from the stationary clamping element 70C3 with the shaft 773a as the center of rotation.

[0490] Furthermore, in the strapping unit described with reference to FIG. 107 and 108, a pair of movable clamping elements may be provided as described in additional note 1.

[0491] FIG. 109 and 110 are diagrams illustrating an example of a tie block described in Supplementary Note 12. The tie block 7D includes a movable clamp member 70L4 and a fixed clamp member 70C4 as a pair of clamp members. The movable clamping element 70L4 is rotatable relative to the stationary clamping element 70C4 with a shaft 773b as the center of rotation.

[0492] If the direction of travel of the shaft 773b, which is the axial direction of the shaft 773b, is set as the first direction, and the direction orthogonal to the first direction is set as the second direction, the movable clamping member 70L4 and the stationary clamping member 70C4 extend in the second direction. The first direction is indicated by arrow P1, and the second direction is indicated by arrow P2.

[0493] The other end side of the movable clamping member 70L4 is rotatably supported by the fixed clamping member 70C4 so that one end side in the longitudinal direction along the second direction can move in the direction of separation and the approximation direction to one end side of the fixed clamping member 70C4. The shaft 773b is an elongated member and protrudes in a first direction from the stationary clamping member 70C4.

[0494] The strapping unit 7D includes an opening and closing pin 71a4 (moving member) that extends in a first direction and is movable in a second direction. The opening and closing pin 71a4 is attached to the above bending section 71. The bending section 71 extends in the second direction and is provided with a space having a substantially cylindrical shape, a square tubular shape or the like, which includes a part of the movable clamping element 70L4 and a part of the stationary clamp element 70C4. The opening and closing pin 71a4 protrudes in the first direction into the space inside the bending section 71.

[0495] The movable clamping member 70L4 has an opening and closing guide hole (mounting portion) 77L4 into which the opening and closing pin 71a4 is mounted. The opening and closing guide hole 77L4 extends along the longitudinal direction of the first movable clamping member 70L4. In particular, the opening and closing guide hole 77L4 has a first idle portion 77L4a extending along the direction of travel of the bending portion 71 by a first idle distance, a second idle portion 77L4b extending along the direction of travel of the bending portion 71 by a second idle distance and opening and a cover portion 77L4c that extends so that it obliquely bends outward from one end of the first idle portion 77L4a and is connected to the second idle portion 77L4b.

[0496] When moving the bending portion 71 in the second direction, the opening and closing pin 71a4 moves in the second direction along the opening and closing guide hole 77L4.

[0497] When moving the bending portion 71 in the direction of the arrow P2f, which is one direction along the second direction, one end side of the movable clamping element 70L4 rotates in the direction of approach to the stationary clamping element 70C4 with the shaft 773b as the center of rotation. When the bending section 71 is moved in the direction of the arrow P2r, which is another direction along the second direction, one end side of the movable clamping element 70L4 rotates in a direction away from the stationary clamping element 70C4 with the shaft 773b as the center of rotation. In the strapping unit described with reference to FIG. 109 and 110, the movable clamping element may be provided with an opening and closing portion of the shaft, and the movable element (bending section) may be provided with a mounting portion, as described in supplementary note 11.

[0498] This application is based and claims the priority of Japanese patent application No. 2015-145263, filed July 22, 2015, and Japanese patent application No. 2016-135748 and 2016-136070, filed July 8, 2016, the full contents of which are included here by reference.

LIST OF REFERENCE POSITIONS

[0499] 1A machine for tying reinforcing bars,

2A shop,

20 coil

3A wire feed unit (feed unit),

4A parallel guide (feed unit),

5A folding guide block (feed block),

6A cutting unit,

7A strapping section (strapping unit),

8A drive unit for strapping unit,

30L first feed gear,

30R second feed gear,

31L tooth section,

31La lower tooth circumference,

32L first delivery groove,

32La first inclined surface,

32Lb second inclined surface,

31R tooth section,

31Ra lower tooth circumference,

32R second feed groove,

32Ra first inclined surface,

32Rb second inclined surface,

33 drive unit

33a feed motor,

33b gear

34 offset section,

50 first guide block,

51 second guide block,

52 guide groove,

53 guide pin,

53a abduction mechanism,

54 fixed guide block,

54a wall surface,

55 movable guide block,

55a wall surface,

55b shaft,

60 fixed blade section

61 rotating blade section,

61a shaft

62 gear,

70 clamping section

70C fixed clamping element,

70L first movable clamping member,

70R second movable clamping element,

71 bending section,

71a opening and closing pin (moving member),

77 shaft

77C installation site,

77L opening and closing guide hole (first opening and closing guide hole, mounting portion),

77R opening and closing guide hole (second opening and closing guide hole, mounting portion),

78C guide hole (mounting portion),

78L, 78R opening and closing section,

80 engine

81 gearbox

82 rotating shaft,

83 movable element

101 restrictive section,

105 ledge,

110 containing unit

111 inclined section

120 coil

121 pressure mechanism

131 points of contact,

141 stop prevention section,

142 stop prevention section,

410 hub section

420 flange section

430 flange section,

510 section of the inner wall,

520 peripheral wall section,

560 container

570 hole

580 cover,

W wire

Claims (51)

1. A strapping machine, characterized in that it contains: a feed unit, which is arranged to feed the wire and winding the wire around the strapping object; and strapping unit that clamps and twists the wire, moreover, the strapping unit includes: a pair of clamping elements in which the other end side is rotatably supported by a shaft extending in the first direction, so that one end side can move towards and from each other; and a moving member that extends in a first direction and which is movable in a second direction orthogonal to the first direction; and at least one of the pair of clamping members is a movable clamping member having a mounting portion, so that the moving member is mounted in the mounting portion, and the mounted moving member can be moved in the second direction. 2. The strapping machine according to claim 1, characterized in that the mounting section is formed so as to extend in the longitudinal direction of the movable clamping element. 3. The strapping machine according to claim 1, characterized in that the installation section is formed so as to extend in the longitudinal direction of the movable clamping element, bend outwardly between the end sections of the installation section, and again extend in the longitudinal direction. 4. The strapping machine according to any one of paragraphs. 1-3, characterized in that the installation section is a groove. 5. The strapping machine according to any one of paragraphs. 1-3, characterized in that the installation section is a hole passing through a movable clamping element. 6. Strapping machine according to any one of paragraphs. 1-5, characterized in that the pair of clamping elements is: a first movable clamping element having an installation section, so that the moving element is installed in the installation section, and the installed moving element can move in the second direction; and a second movable clamping member having a mounting portion, so that the moving member is mounted in the mounting portion, and the mounted moving member can move in the second direction. 7. The strapping machine according to claim 6, characterized in that the strapping unit has a fixed clamping element extending in the second direction, and a first movable clamping element and a second movable clamping element are provided on both sides of the stationary clamping element relative to the fixed clamping element, one end side of the first movable clamping element is movable towards and away from the stationary clamping element, and one end side of the second movable clamping element The element is arranged to move in the direction of the stationary clamping element and away from it by rotation. 8. The strapping machine according to claim 7, characterized in that the stationary clamping element has a mounting portion that is movable in the second direction by installing a moving member installed in the mounting portion of the first movable clamping element and the mounting portion of the second movable clamping element. 9. The strapping machine according to claim 8, characterized in that the mounting portion of the fixed clamping element is a groove extending in the second direction. 10. The strapping machine according to claim 8, characterized in that that the mounting portion of the fixed clamping element is an opening that extends through the stationary clamping element and which extends in a second direction. 11. Banding machine according to any one of paragraphs. 7-10, characterized in that the shaft is provided on a fixed clamping element. 12. The strapping machine according to any one of paragraphs. 1-11, characterized in that the shaft is provided on an extended line of the path of movement of the moving element. 13. The strapping machine according to any one of paragraphs. 1-12, characterized in that it further comprises a movable element, which is installed using a moving element and which is arranged to move in the second direction, and the movable element includes a covering section that covers the installation section. 14. Binding machine, characterized in that it contains: a feed unit, which is arranged to feed the wire and winding the wire around the strapping object; and strapping unit that clamps and twists the wire, moreover, the strapping unit includes: a pair of clamping elements in which the other end side is rotatably supported by a shaft extending in the first direction, so that one end side can move towards and from each other; and a movable element that is movable in a second direction orthogonal to the first direction, wherein at least one of the pair of clamping elements has an opening and closing shaft portion that extends in a first direction, the movable member includes a mounting portion into which an opening and closing portion of the shaft is mounted, and the mounting portion is configured to move the movable member in a second direction in a state in which the opening and closing portion of the shaft is mounted. 15. The strapping machine according to claim 1 or 14, characterized in that it further comprises a casing that is configured to receive a coil on which the wire is wound, and which is configured to pull the wire, and the casing is provided with an inner wall and has a movement restriction unit wire, which limits the contact of the weakened wire with the inner wall and lateral movement in the axial direction of the coil along the inner wall. 16. The strapping machine according to claim 15, characterized in that the block for restricting the movement of the wire is a protrusion that projects into the casing from the inner wall. 17. The strapping machine according to claim 15 or 16, characterized in that the feed unit includes a wire feed unit that feeds the wire pulled from the casing, and the wire movement restriction unit is provided on the inner wall located on the side opposite to the wire feed unit relative to the coil. 18. The strapping machine according to claim 17, characterized in that the casing is adapted to receive a coil, which includes a hub section that serves as a core for winding wire, and a pair of flange sections provided on both ends of the hub section, the inner wall has a peripheral wall that faces the hub portion when the coil is placed, and the wire movement restriction unit protrudes in the direction of the coil from the wall surface at or near the end portion of the peripheral wall. 19. The strapping machine according to claim 18, characterized in that the wire movement restriction unit protrudes in the direction of the flange portions from the wall surface at or near the end portion of the peripheral wall. 20. The strapping machine according to claim 19, characterized in that the block for restricting the movement of the wire is a vertical wall that extends from the wall surface of the peripheral wall and which has a length not reaching the flange sections. 21. The strapping machine according to any one of paragraphs. 15-20, characterized in that the casing includes a container that is configured to accommodate the coil, and a cover that is configured to open and close the hole for installing the coil provided in the container, and a wire restriction block is provided on the inner wall of the container or on the lid. 22. The strapping machine according to claim 21, characterized in that the block for restricting the movement of the wire is formed by a vertical wall protruding in the direction of the flange section from a pair of flange sections located near the hole from the inner wall of the container or lid when placing the coil. 23. The strapping machine according to claim 1 or 14, characterized in that it further comprises: a casing that is configured to accommodate a coil on which the wire is wound, and which pulls the wire out of it, moreover, the casing includes a container that has a space configured to accommodate the coil, and a cover that is configured to open and close the hole provided in the container for installing the coil, and an inclined portion that extends in a direction crossing the weakened wire in the housing is provided in the portion of the docking portion between the housing and the lid. 24. The strapping machine according to claim 23, wherein the feed unit includes a wire feed unit that feeds wire pulled from the casing, and an inclined portion is provided in a portion where the weakened wire is in contact with or near the inner wall of the casing and tilted towards the rear side of the casing as the weakened wire moves in the casing from the wire feed unit. 25. The strapping machine according to claim 1 or 14, characterized in that it further comprises: a casing that is configured to accommodate a coil on which the wire is wound, moreover, the casing includes a container that has a space configured to accommodate the coil, and a cover that is configured to open and close the hole provided in the container for installing the coil, and the container includes a clamping mechanism that elastically presses and holds the lid in the direction of the container. 26. The strapping machine according to claim 25, characterized in that the clamping mechanism presses and holds the portion of the lid corresponding to the inner wall with which the weakened wire is in contact with or in the vicinity of it.

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